M List of Acronyms
MAINTENANCE OF EQUIPMENT, Logging LSSO, §6261
MACHINERY GUARDING, Points of Operations Tools
Definition  GISO, §4188
Foot-Operated Devices GISO, §4185
Jewelry Wearing prohibited  GISO, §3384, Note 2
Machine Guarding GISO, §4184
Maintenance of Tools & Guards GISO, §4186
Microtomes, Guarding Requirement Exception GISO, §4184
Rolls, Guarding of GISO, §4187
MACHINES GISO, §3328
Anchoring   GISO, §3328(d), (e)
Blocking For Repair    GISO, §3314(d)
Cleaning  GISO, §3314
Control of Hazardous Energy, due to Breakage/ Loosening/Falling Parts/Components GISO, §3328(e)
Controls, Process Machines  GISO, §4000
Covered, to Minimize Hazard from Breakage/ Loosening/Falling Parts/Components GISO, §3328(e)
Damaged, Broken GISO, §3339
Damage Prevention, to Minimize Hazard GISO, §3328(e)
De-Energizing    GISO, §3314(b)
Defective Parts, Prohibited Use GISO, §3328(c)
Design GISO, §3328(a)
Designed to Minimize Hazard from Breakage/ Loosening/Falling Parts/Components GISO, §3328(e)
Employers Responsibility, Safe Condition of GISO, §3556(a)
Energy control procedures  GISO, §3314
Guarded, to ensure worker safety  GISO, §3273(i)
Guarding Moving Parts of GISO, §4002
Inspection & Maintained GISO, §3328(b), (g), (h)
Intended Use, Only used for  GISO, §3556(b)
Jewelry Wearing prohibited  GISO, §3384(b), Note 2
Lockout or Tag-out  GISO, §3314
Location, Safe   GISO, §3273(i)
Lighting of   GISO, §3317
Oiling & Maintenance, Access through Opening in Guarding   GISO, §3945
Maintenance of GISO, §3273(g)
Maintained GISO, §3328(b), (g), (h)
Manufacturer's Recommendations GISO, §3328(b) & (e)
Modifications  GISO, §3328(f)
Power Control   GISO, §4001
Process Machine Power Control GISO, §4000
Qualified Persons, Maintain, Repair GISO, §3328(h)
Safe Condition GISO, §3328(g)
Safely Operated  GISO, §3328(a)
Secure, to Minimize Hazard from Breakage/ Loosening/Falling Parts/Components GISO, §3328(e)
Exception, Per Manufacturer's Recommendations GISO, §3328(e)
Unsafe Equipment Use Prohibited  GISO, §3328(c)
MACHINE TOOLS, Maintained     GISO, §4186(a)
MAGNESIUM, Combustible Metal GISO, §5175
MAGNESIUM OXIDE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MAGNESIUM STEARATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MALATHION (MLT)
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MALEIC ANHYDRIDE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MAINTENANCE
Cranes GISO, §5033
Electrical Cords & Cables, Maintenance of Outer Sheath ESO-LV, §2500.25
Electrical Equipment & Installations, Low Voltage ESO-LV, §2340.1
Electrical Equipment & Installations, High Voltage      ESO-HV, §2714
Equipment Maintenance, per GISO GISO, §3273(g)
Exits, Maintenance of GISO, §3225
Eye wash & Shower, Emergency Equipment, Maintenance Also EYEWASH GISO, §5162(e)
Field Sanitation, Agricultural Operations GISO, §3457(c)(3)
Fire Alarm Systems GISO, §6184(d)
Fire Extinguisher, Per GISO, Maintenance & Testing  GISO, §6151(e)
Fire Protection Equipment, Materials, Maintenance of   GISO, §3219
Forklifts, AKA - Industrial Trucks GISO, §3663
Muffler Screens, Clogging Prohibition GISO, §3663(b)
Water Muffler, Daily Refill GISO, §3663(b)
Gas Compressors & Gas Plant Requirements
Pre-Maintenance Procedure, locking / Blocking PSO-D&P, §6553(f)
Machinery, Maintenance PSO-D&P, §6624
Hoisting Equipment & Cranes GISO, §5033
Industrial Trucks, including Forklifts GISO, §3663
Muffler Screens, Clogging Prohibition GISO, §3663(b)
Water Muffler, Daily Refill GISO, §3663(b)
Oil & Gas Refinery Sites, Process Equipment Maintenance PSO-R,T&H, §6838 
Oil & Gas Well Sites, 
Exhaust System Maintenance  PSO-D&P, §6684(c)
Derricks & Masts Maintenance  PSO-D&P, §6568
Power Operated Presses   GISO, §4202(c)
Pressure Vessels & Boilers subject to PSO-D&P PSO-D&P, §6551(c)
Pumping Machinery & Equipment Maintenance PSO-D&P, §6630
Ship Yard Standards, Enclosed Space Entry, per SSO SSO, §8355
Tanks & Reservoirs, Maintenance  PSO-D&P, §6547
Tree Maintenance or Removal GISO, §3421
Well Shafts , Maintenance  PSO-D&P, §6576
MANBASKET, Crane or Derrick Suspended Personnel Platform, per GISO GISO, §5004
Anti Two-Block Device GISO, §5004(e)(3)
Application GISO, §5004(a)
Design Criteria GISO, §5004(f)
Exception to Prohibited Use GISO, §5004(c)
Free Fall Prohibition GISO, §5004(e)
Instrument & Component Requirements GISO, §5004(e)
Loading Requirements GISO, §5004(h)
Operating Criteria GISO, §5004(d)
Pre-Lift Meeting GISO, §5004(m)
Rigging of GISO, §5004(i)
Scope and Application of §5004 GISO, §5004(a)
Specifications GISO, §5004(g)
Traveling of Hoist or Crane GISO, §5004(l)
Trial Lift, Inspection & Proof Testing GISO, §5004(j)
Work Practices GISO, §5004(k)
MANBASKET, Crane or Derrick Suspended Personnel Platform, per TSO TSO, §8495(b), (c)
Broken Rope Safety Device TSO, §8495(d)
Crane Use, General Requirements TSO, §8495(a)
Cranes Used in Shaft Under Construction TSO, §8495(b)(4)
Work Platforms, Used as  TSO, §8495(c)(5)(A)
MANGANESE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MANGANESE COMPOUNDS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MANGANESE CYCLOPENTADIENYL TRICARBONYL
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MANGANESE TETROXIDE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MANHOLE COVERS, per CSO
Designed for Loads from vehicles operated on site  CSO, §1597(k)
MANHOLE COVERS, per GISO GISO, §3213(d)
MANHOLES, per ESO-HV
Underground High-Voltage Cables, Conductors or Equipment
Work in Manholes, Vaults, & Similar Structures ESO-HV, §2943(b)
Confined Space Regulations, Mandated ESO-HV, §2943(b)(1)
Underground Vaults ESO-HV, §2813
Dimensions ESO-HV, §2813(a) & (b)
MANHOLES & FLOOR OPENINGS, safety  CSO, §1632
MANHOLES & STREET OPENINGS, per TelSO
Entering Procedure TelSO, §8616(b)
Flames, Open, in Man Holes  TelSO, §8616(f)
Procedural Requirements TelSO, §8616(f)(1), (2)
Guarding TelSO, §8616(a)
Joint Power & Tele-com Man Holes TelSO, §8616(d)
First Aid Training  TelSO, §8616(d)
Attendant Duties TelSO, §8616(d)
Man Hole Platform TelSO, §8616(c) 
MANIFOLDS, Gas Welding Cylinders to Headers, General Industry GISO, Article 86
Fuel Gas Manifolds GISO, §4835
Hose GISO, §4839
Liquid Oxygen GISO, §4837
Manifolds, General Requirements GISO, §4834
Oxygen Manifolds GISO, §4836
Pressure Regulating GISO, §4838
Manifolds & Hose Connection Requirements, Shipyard Operations SSO, §8393
MANIFOLD , Gas Welding Hose & Connections, Construction Operations CSO, §1742
Definition of CSO, §1742(e)
MANIFOLD , Gas Welding Hose & Connections, Shipyard Operations SSO, §8393
MAN-LIFTS See also ELEVATORS
Construction Operations CSO, §1630
Endless Belt-type Man-lifts, Prohibited  CSO, §1604.1(a)(3)
Orchard Man-Lifts   GISO, §3641
MANUAL FEED, Ripsaws, Circular     GISO, §4300
MANUALS
Diving Safety, Employer Developed  GISO, §6052 
Content of Manual GISO, §6054
Manufacturers Recommendations   GISO, §3328(b)
Powder-actuated tools, Instruction manual  CSO, §1687
Storage in Tool Container CSO, §1689
MANUFACTURED PROTECTIVE COVERS, Rebar Covers  CSO, §1712(d)(3)
MANUFACTURERS RECOMMENDATIONS   GISO, §3328(b)
MANUFACTURING of EXPLOSIVES     See EXPLOSIVES, Manufacturing Operations of Explosive Materials
MANURE SUMP or PIT    See CONFINED SPACE
MANWAYS, STAIRWAYS & RUNWAYS, per MSO MSO, §7044
MAPS, Mine Emergency plans MSO, §7077
MARIATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MARINE SERVICE STATIONS
”           ”            ”            ”            ”                 See also FLAMMABLE LIQUIDS, GASES & VAPORS
Application & Scope GISO, §5565
Attendance or Supervision of Dispensing GISO, §5578
Containers & Tanks, Portable GISO, §5566
Dispensing into Portable Containers GISO, §5577
Dispensing, Attendance or Supervision of GISO, §5578
Dispensing into Portable Containers GISO, §5577
Drainage & Waste Disposal  GISO, §5579
Electrical Equipment  GISO, §5574
Emergency Power Cutoff  GISO, §5572
Enclosures, Special  GISO, §5567
Fire Control GISO, §5581
Fuel Delivery Nozzles GISO, §5576
Fuel, Gasoline Dispenser, Hazardous Locations  ESO-LV, §2540.7
Fuel Dispensing System  GISO, §5571
Fuel Dispensing Unit  GISO, §5573
Fuel / Gasoline Dispenser, Hazardous Locations  ESO-LV, §2540.7
Hazardous Locations (Classified) ESO-LV, §2540.7
Heating Equipment GISO, §5575
Ignition, Sources of  GISO, §5580
Nozzles, Fuel Delivery GISO, §5576
Piping, Valves and Fittings  GISO, §5569
Portable Containers, Dispensing into GISO, §5577
Power Cutoff, Emergency  GISO, §5572
Pumping Systems, Remote  GISO, §5570
Service pits, Guarding of GISO, §3213
Sources of Ignition  GISO, §5580
Storage of, Flammable Gasses, Liquids, Vapor GISO, §5566
Containers & Tanks GISO, §5566
Enclosures, Special  GISO, §5567
Inside Buildings GISO, §5568
Supervision of Dispensing GISO, §5578
Tanks & Containers, Storage GISO, §5566
Dispensing into Portable Containers GISO, §5577
Water, Drainage Disposal GISO, §5579 
MARINE TERMINAL OPERATIONS GISO, Article 14
Application / Scope GISO, §3459
Definitions  GISO, §3460
Access, Safe GISO, §3461(i), (k), (l)
Accident Prevention, Cargo Handling Operations GISO, §3464(a)
Apron, Grab lines or rails  GISO, §3461(h)
Asbestos  GISO, §3463(c)
Atmosphere, Hazardous GISO, §3463
Control Access to GISO, §3461(l)
Immediately dangerous to life GISO, §3470(a)(4)
Bales, Hoisting of GISO, §3461(e)
Barges, Moving of GISO, §3461(d)
Booms, & Cargo Cranes, Vessel Mounted GISO, §3461(d)
Bridles, Hooks, Slings & Fittings GISO, §3474
Carbon Monoxide  GISO, §3463(a)
Cargo
Bulk Cargo handling devices, Examination of  GISO, §5024
Hazardous Cargo  GISO, §3462
Damaged Packaging / Containers Repair  GISO, §3461(o)
Cargo Container/ Packaging, Damaged, Repair of GISO, §3461(o)
Certification of Shore Based Material Handling Devices GISO, §3473
Chutes, Gravity Conveyors, Rollers GISO, §3471
Communication, Interference with GISO, §3470(a)(1)
Confined Space Entry, Control Access to GISO, §3461(l)
Containers, Shipping GISO, §3466
Vertical Tandem Lifts of GISO, §3466(j)
Conveyors, Gravity GISO, §3471
Covers, Safe Stowing & Storage, Stable Piles GISO, §3461(j) 
Cranes & Other Hoisting Equipment GISO, §3472
Certification of GISO, §3473
Damaged Cargo Container/ Packaging, Repair of GISO, §3461(o)
Definitions  GISO, §3460
Docks GISO, §3465
Drafts Safely Slung, Prerequisite to Hoisting GISO, §3461(b)
Dunnage, Loose GISO, §3461(c)
Dust, unsafe concentrations  GISO, §3470(a)(3) 
Employees, Riding on Loads / Load Hoisting Equipment GISO, §3461(g)
Explosives / Hazardous Cargo  GISO, §3462
Facilities, Terminal GISO, §3465
Fall Protection, Railing or Grablines GISO, §3461(h)
Fires, Open fires, Prohibition GISO, §3461(n)
First Aid GISO, §3464(b)
Signs, First Aid Facility Location  GISO, §3465(d)(1)
Flammable Liquid Handling
Hazardous Locations (Classified) ESO-LV, §2540.8(b)(6)
Illustration of ESO-LV, §2540.8, Figure 1
Forklifts, Industrial Trucks / Tractors GISO, §3469
Training GISO, §3469(b)
Fumigants GISO, §3463(b)
Garbage Uncovered, Work near  GISO, §3461(m)
Gravity Conveyors, Chutes GISO, §3471
Hatch Beams and Covers Storage, Stable Piles GISO, §3461(j)
Hazardous Atmosphere & Substances GISO, §3463
Warning Signs GISO, §3461(l)
Hazardous Cargo  GISO, §3462
Hazardous Locations (Classified) ESO-LV, §2540.8(b)(6)
Illustration of ESO-LV, §2540.8, Figure 1
Hazardous Spill Cleanup  GISO, §3462(d)
Hoisting Equipment GISO, §3472
Certification of Hoisting Equipment GISO, §3473
Hooks, Slings, Bridles & Fittings GISO, §3474
Hoisting, Prerequisite to, Draft Safely slung  GISO, §3461(b)
Vertical Tandem Lifting Procedure GISO, §3466(j)
Hoisting of Employees, Riding on Loads / Load Hoisting Equipment GISO, §3461(g)
Hooks, Hoisting GISO, §3474
” ”           ” See Also CRANES
Hot metal  GISO, §3470(a)(2)
Immediately dangerous to life, Atmospheres GISO, §3470(a)(4)
Industrial Trucks / Tractors GISO, §3469
Training GISO, §3469(b)
Injurious light rays GISO, §3470(a)(2)
Intermodal Containers GISO, §3466
Vertical Tandem Lifting Procedure GISO, §3466(j)
Insecticides GISO, §3463(b)
Inspection of Loading Gear, Equipment GISO, §3461(a) 
Labeling of Hazardous Cargo  GISO, §3462
Ladders, Readily Available GISO, §3465(c)
Lifting Containers in Tandem GISO, §3466(j)
Loading Safety GISO, §3461(d), (e), (f)
Vehicle, Flatbed, Platform Containers  GISO, §3475(k)
Securing Vehicle from Rolling GISO, §3475(a), (h)
Log Handling & Containment of Logs GISO, §3467
Longshoring Prohibitions GISO, §3470
Activities Interfering with Communication GISO, §3470(a)(1)
Atmospheres, Immediately Dangerous to Life GISO, §3470(a)(4)
Noisy maintenance, construction or repair work, Communication Interference   GISO, §3470(a)(1)
Paint Spraying, Injurious Dust & Vapor Exposure GISO, §3470(a)(3)
  Welding, Cutting, Injurious Exposures GISO, §3470(a)(2)
Maintenance and Repair work, Longshoring Restrictions  GISO, §3470
Nails Protruding, Hazard Control GISO, §3461(c)
Noisy maintenance, construction or repair work, Communication Interference    GISO, §3470(a)(1)
Pallets GISO, §3468
Rescue Ladders, Readily Available GISO, §3465(c)
Pesticides GISO, §3463(b)
Piers GISO, §3465
Pontoon, Storage / Safe Stowing  GISO, §3461(j)
Railcars, Moving of GISO, §3461(d)
Railing or Grablines GISO, §3461(h)
Riding of Loads GISO, §3461(g)
Rollers, Chutes GISO, §3471
Safety Requirements, General GISO, §3461
Sandblasting GISO, §3470(a)(3) 
Sanitary lines overboard discharge, Work Restriction  GISO, §3461(m)
Sewage Line Discharges, Work Restriction  GISO, §3461(m)
Signs  GISO, §3465(e)
Emergency Equipment, Location of  GISO, §3465(d)(4)
Hazardous Spaces, Access Control GISO, §3461(l)
Fire Exits, Location of  GISO, §3465(d)(4)
Fire Fighting Equipment, Location of  GISO, §3465(d)(4)
First Aid Facility Location  GISO, §3465(d)(1)
Highway Vehicle Floors GISO, §3475(j)
Securing from Rolling GISO, §3475(k)
Stop Sign Posting Locations GISO, §3475(c)
Telephone, Location of  GISO, §3465(d)(2)
Telephone Numbers, Emergency Response & Nearest Hospital  GISO, §3465(d)(3)
Stable Piles of Hatch Beams, Covers, Pontoons GISO, §3461(j)
Slings, Hooks, Bridles & Fittings, Hoisting GISO, §3474
Sparks  GISO, §3470(a)(2) 
Spill Cleanup, Hazardous Cargo  GISO, §3462(d)
Spray painting GISO, §3470(a)(3) 
String Piece or Apron Width, Grab Lines or Rails Required GISO, §3461(h)
Substance, Hazardous GISO, §3463
Terminal Facilities GISO, §3465
Unitized Loads, Hoisting of GISO, §3461(f)
Vapors, unsafe concentrations  GISO, §3470(a)(3) 
Vehicles  GISO, §3475
Visibly Unsafe GISO, §3461(a)
Wharves GISO, §3465
Warning Signs, Hazardous Spaces GISO, §3461(l)
Welding & Cutting, Exposed to  GISO, §3470(a)(2)
Work Area, Safe Access and Egress  GISO, §3461(i), (k), (l)
Work Stoppage Required, Dangerous Conditions GISO, §3470
Vehicles  GISO, §3475
Barriers  GISO, §3465
Employee Transport Vehicles GISO, §3475(l)
Industrial trucks  GISO, §3469
Loading, Safe GISO, §3475(a), (h)
Speed & Traffic Control, Compliance GISO, §3475(b), (c), (d), (f), (g)
Trailer, Disconnecting, Wheel Blocking GISO, §3475(a)
Unattended GISO, §3475(h)
MARKING, Equipment, Circuits per ESO ESO-LV, §2340.21
Durability of Marking ESO-LV, §2340.21(b)
”            ”           ”           ESO-HV, §2718.1(e)
Electrical Panels  ESO-LV, §2340.21
Manufacturers Identification ESO-LV, §2340.21(a)(1)
Panels, Electrical  ESO-LV, §2340.21
Purpose of Service, Feeders, Circuits           ESO-HV, §2718.1(e)
Ratings Identified ESO-LV, §2340.21(a)(2)
”            ”           ”           ESO-HV, §2718.1(e)
MARKING, per GISO
Aisles, Undefined / Dangerous   GISO, §3272(c), (f)
Load, Crane  GISO, §4907(a)
Machines, Laundry & Dry Cleaning GISO, §4480
MASONRY BLOCKS, Stabilized CSO, §1549(a)
MASONRY CONSTRUCTION      CSO, §1722
Limited access zone  CSO, §1722
Defined  CSO, §1504
Mixers  CSO, §1698
Walls bracing  CSO, §1722
MASONRY OPERATIONS, Dust Exposure Control CSO, §1530.1
Stonemasons See STONEMASONS
MAST ACCESS, Ship Masts & King Post, Radiation Hazard SSO, §8397.5
MASTS See DERRICKS, Masts & Supporting Structures 
MASTS, Oil & Gas Well Operations
Access & Exits  PSO-D&P, §6579
Cantilever Masts, Portable  PSO-D&P, §6590
Construction and maintenance  PSO-D&P, §6568
Crown blocks  PSO-D&P, §6571
Crown platforms and railings
Access & lubrication  PSO-D&P, §6592
Cantilever Masts, Portable  PSO-D&P, §6590
Gin Pole Masts  PSO-D&P, §6589
Telescoping / Jackknife derricks and masts  PSO-D&P, §6591
Equipment & Tool Requirements  PSO-D&P, §6603
Erection
Hydraulic lifts  PSO-D&P, §6583
Portable telescoping derricks or masts  PSO-D&P, §6582
 Telescoping gin pole masts  PSO-D&P, §6584
Escape lines  PSO-D&P, §6574
Escape routes, Auxiliary PSO-D&P, §6573(a)
Fall Protection, Safety belts and lanyards  PSO-D&P, §6580 
Fingers, finger boards and finger braces  PSO-D&P, §6569
Floor access and exits  PSO-D&P, §6579
Gin Pole Masts  PSO-D&P, §6589
Pole Steps  PSO-D&P, §6600
Guarding Sheaves PSO-D&P, §6636
Guying
Derricks and masts  PSO-D&P, §6586
Hoses and standpipes, Rotary & Circulating  PSO-D&P, §6609
Hydraulic lifts  PSO-D&P, §6583
Ladders PSO-D&P, §6599(b)
Pole Steps, Gin pole masts  PSO-D&P, §6600
Pipe racking supports  PSO-D&P, §6596
Pipe Tong Requirements  PSO-D&P, §6605
Platforms
Access runways  PSO-D&P, §6594
Cantilever derricks and masts portable  PSO-D&P, §6595
Safety belts and lanyards  PSO-D&P, §6580 
Stabbing boards  PSO-D&P, §6570
Tool & Equipment Requirements  PSO-D&P, §6603
MAT, BLASTING, General Requirement GISO, §5276(f)
Required when blasting near or below Powerlines GISO, §5279(b)
Walks and pipe storage racks  PSO-D&P, §6572
MATCHES & LIGHTERS, Use Restricted, per PSO-R,T&H PSO-R,T&H, §6772
MATCHING MACHINES, Woodworking GISO, §4318
MATERIAL
Hoists See HOISTS, per CSO
Stacks & Piles, Stabilizing  CSO, §1549
Weights & Measurement Facts  CSO, §1938, Appx B
Measurement facts CSO, §1938, Appx B
MATERIAL HANDLING, per GISO
Cargo, Damaged GISO, §3339
Dock Plates & Loading Ramps GISO, §3337
Loading Dock  GISO, §3336
Loading Ramps & Dock Plates GISO, §3337 
Materials, Damaged, Broken GISO, §3339
Material Piles, Safe Access To  GISO, §3339(b)
Pallets  GISO, §3338
MATERIAL & HANDLING, per ESO
Poles, crossarms, and similar in HV-ESO ESO-HV, §2940.8
MATERIAL & HANDLING, per MSO MSO, §6982 
According to GISO Requirements MSO, §6982(a)
Compressed Gas & Liquid Cylinders Storage MSO, §6982(d)
Valves Protection Requirement  MSO, §6982(e)
Cranes & Hoisting Equipment MSO, §6982(g)
Hazardous Materials Labeling MSO, §6982(c)
Hazardous Materials Storage, Handling MSO, §6982(b)
Riding on Suspended Load / Hooks Prohibited MSO, §6982(h)
Exception to this Prohibition MSO, §6982(h)
Suspended Load, Staying Clear of MSO, §6982(f)
MATERIAL & HANDLING, per TelSO TelSO, §8612
Poles, Handling of TelSO, §8612(a)
Cable Reels, Handling of TelSO, §8612(b)
Vehicle-Mounted, Material Handling Equipment TelSO, §8610
Daily Visual Inspection of Equipment TelSO, §8610(a)
Daily Testing of Brakes & Operating Systems TelSO, §8610(b)
Rollover Protection TelSO, §8610(c)
Clearance to High-Voltage Power Lines TelSO, §8610(d)
MATERIAL PILES, Safe Access To  GISO, §3339(b)
MATERIAL RACKS, Securing of 
Designed to Safely Support GISO, §3241(e)
Not overloaded GISO, §3241(e)
MATERIAL SAFETY DATA SHEET (MSDS) 
Accurately Reflects Scientific Evidence GISO, §5194(g)(5)
Definition of GISO, §5194(c)
Development, or Obtain  GISO, §5194(g)(1)
Language Requirement  GISO, §5194g)(2)
Provide, Requirement to GISO, §5194(g)(6)
MATERIALS
Approvals of GISO, §3206
Damaged, Broken GISO, §3339
Decorative, Use of    GISO, §3217
Guards, Material Used to Construct     GISO, §3944, TABLE G-1
Inside Buildings, secured, Piling  CSO, §1549(e)
Spontaneously Combustible  GISO, §5177
Storage of Materials that Could Create Hazard    GISO, §3241(c)
Transportation of Materials GISO, Article 27
Definitions GISO, §3700
Back-up Alarms / Warning Devices GISO, §3706
Cab Protection  GISO, §3705
Helicopters, Use of GISO, §3710
Licensing of Drivers GISO, §3701
Riding Loads GISO, §3703
Securing Load  GISO, §3704
Transporting Employees GISO, §3702
Truck Warning Devices GISO, §3706
MATERIAL STORAGE AREAS, Maintenance Requirement GISO, §3273(b)
MATS, Slippery Floor Remediation GISO, §3272(d)
Protecting Workers on Slippery Working Areas   GISO, §3273(a)
MAXIMUM ALLOWABLE WORKING PRESSURE PSO-D&P, §6551(b)
MbOCA, 4, 4’Methylenebis (2Chloroaniline)     See METHYLENEBIS
MC See METHYLENE CHLORIDE 
MDA See METHYLENEDIANILINE
MEANS OF EGRESS     GISO, §3215
MEAT CHOPPER (Class A), Food Service  GISO, §4553
MEAT & MEAT PROCESSING, Band Saw Blades, Guarding  GISO, §4543
MECHANICAL EQUIPMENT TelSO, §8610
MECHANICAL HAULAGE REFUGE STATIONS MSO, §7026
MECHANICAL HAZARDS, per TSO TSO, §8459
MECHANICAL PROTECTION, Electrical    ESO-LV, §2340.26
MECHANICAL REFRIGERATION SYSTEMS GISO, §3248 
MECHANICAL VENTILATION SYSTEMS CSO, §1530
Design CSO, §1530(a)
Disposal of Exhaust Materials CSO, §1530(c)
Duration of Operation CSO, §1530(b)
Operation & Use of CSO, §1530(a)
MEDIA, News gathering Equipment See ELECTRONIC NEWS GATHERING (ENG) EQUIPMENT
MEDICAL ATTENDANT, Qualified, per TSO TSO, §8420(b)(4)
MEDICAL DECOMPRESSION CHAMBER, Pressurized Worksite Safety Orders GISO, §6120(b)
MEDICAL EXAMINATIONS   See PHYSICAL EXAMINATIONS 
MEDICAL MONITORING, Airborne Contaminants  GISO, §5155(f)  
MEDICAL PERSONNEL, Availability    GISO, §3400(a)
MEDICAL RECORDS, Access to GISO, §3204
Transfer of  GISO, §3204(h)
MEDICAL SERVICES & FIRST AID, per CSO CSO, §1512
Basket Litter  CSO, §1512(h)
Call, Emergency Call System  CSO, §1512(g)
Defined CSO, §1504
Emergency call systems CSO, §1512
Trained Personnel  CSO, §1512(b), (d)
First Aid Kit  CSO, §1512(c)
Provisions of Medical Services CSO, §1512(a)
Provisions for Obtaining Treatment CSO, §1512(e)
Washing Facilities  CSO, §1512(f)
Written Plan  CSO, §1512(i)
MEDICAL SERVICES, FIRST AID, per GISO GISO, §3400
General First Aid requirements GISO, §3400
Availability of Medical Personnel GISO, §3400(a)
Blankets GISO, §3400(b)
Body wash/drenching GISO, §3400(c)
Effective Provisions for Care GISO, §3400(d)
Eye wash / flush See Also EYEWASH GISO, §3400(d)
Inspections of 1st Aid materials GISO, §3400(f)
Stretchers GISO, §3400(c)
` Supplies GISO, §3400(e)
Telephone communication GISO, §3400(e)
Training GISO, §3400(f)
Transportation GISO, §3400(f)
MEDICAL SERVICES STANDARDS
Aerosol Transmissible Diseases GISO, §5199(h)
Aerosol Transmissible Diseases, Zoonotic           GISO, §5199.1 (d)
Agricultural Operations GISO, §3439    
Animals Infected with Aerosol Transmissible Diseases           GISO, §5199.1 (d)
Marine Terminals GISO, §3464(b)
  ”          ”           ” GISO, §3465(d)(1)   
Diving Operations GISO, §6052(d), (f)    
Tree Work, Maintenance or Removal GISO, §3421(j)
At Permanent Amusement Rides PARSO, §3195.7(c)
Aquatic Devices PARSO, §3195.11(b)
Operations subject to Tunneling Safety Orders TSO, §8420
TSO, §8421
Operations subject to Construction Safety Orders CSO, §1512
Training, Specific to Workplace Hazard CSO, §1510(c)
Operations subject to Mine Safety Orders MSO, §6968
MSO, §6969
Operations subject to Petroleum Safety Orders
Drilling and Production PSO-D&P, §6511
PSO-D&P, §6512
Refining, Transport & Handling PSO-R,T&H, §6767
Logging and Sawmill operations LSSO, §6251
Ship Building, Repairing and Breaking Operations SSO, §8351
Access to SSO, §8351(a)
Advice and Consultation SSO, §8351(b)
Basket Stretchers SSO, §8351(b)
Eye Wash, Flushing, Drenching Facilities SSO, §8351(e)
First Aid Providers SSO, §8351(c)
First Aid Supplies SSO, §8351(d)
Flushing, Drenching Facilities, for body and eyes SSO, §8351(e)
Stretchers SSO, §8351(b)
Telecommunication Operations TelSO, §8602(e), 
Work in Manholes w/ Telecomm & Electric Utilities TelSO, §8616(d)
Pressurized Worksite Operations GISO, §6105(k)(6)    
Fumigation Operations GISO, §5221(c)
Pulp & Paper mill Operations GISO, §4414(a)
Zoonotic Aerosol transmissible Disease      GISO, §5199.1(d)(8)
MEDICAL SERVICES & FIRST AID, per PSO-R,T&H PSO-R,T&H, §6767
MEDICAL SERVICES & FIRST AID, per SSO SSO, §8351
Access to SSO, §8351(a)
Advice and Consultation SSO, §8351(b)
Basket Stretchers SSO, §8351(b)
Eye Wash, Flushing, Drenching Facilities SSO, §8351(e)
First Aid Providers SSO, §8351(c)
First Aid Supplies SSO, §8351(d)
Flushing, Drenching Facilities, for body and eyes SSO, §8351(e)
Stretchers SSO, §8351(b)
MEK (Methyl Ethyl Ketone), Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MERCAPTAN
Butyl Mercaptan, Airborne Contaminant, Exposure limit  GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Ethyl Mercaptan, Airborne Contaminant, Exposure limit  GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Methyl Mercaptan, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management  GISO, §5189, Appx A 
Odorizer, Used as LNG Odorizer, See Requirement in Pressure Vessel Safety Orders UFPV, §527(b) 
Perchloromethyl Mercaptan
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
MERCURY, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MERCURY ALKYLS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MERCURY COMPOUNDS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MESITYL OXIDE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METAL-CLAD CABLE, per HV-ESO ESO-HV, Article 13
Bends ESO-HV, §2784
Elevation ESO-HV, §2786
Fittings ESO-HV, §2785
Grounding, Grounding Conductors  ESO-HV, §2782
Splices & Terminations   ESO-HV, §2787.1
Strength ESO-HV, §2787
Supports ESO-HV, §2783
Use ESO-HV, §2781
METAL, Combustible   
Aluminum, Lithium, Magnesium, Titanium & Zirconium GISO, §5175
METAL CUTTING SAWS, CIRCULAR     GISO, §4231
METAL EMBOSSING MACHINES (Class B) See under METAL WORKING MACHINES
METAL FABRICATING EQUIPMENT/MACHINERY    See under METAL WORKING MACHINES
METAL FRAME BUILDING, Used as Grounding Electrodes ESO-LV, §2395.82(a)
METAL FRUIT PICKING POLES    GISO, §3455
METAL RACEWAYS, Electrical  ESO-LV, §2395.75
METAL SCAFFOLDS       See SCAFFOLDING
METAL SHEARS See under METAL WORKING MACHINES
METAL LADDERS, Portable     See PORTABLE LADDERS
METAL TURNING  GISO, §3581
METAL WORKING MACHINES GISO, Article 56
Abrading, Buffing & Polishing Machine (Class A) GISO, §4237
Air-lift hammers  GISO, §4240
Alligator Shears (Class B) GISO, §4236
Bar Stock Machine (Class A) GISO, §4233
Board Drop-Hammers GISO, §4241
Buffing, Polishing & Abrading Machine (Class A) GISO, §4237
Circular Metal Cutting Saws GISO, §4231
Definitions
Forging Machines GISO, §4239
Forging Presses, Mechanical & Hydraulic GISO, §4242
Air-lift Hammers  GISO, §4240
Board Drop-Hammers  GISO, §4241
Dies changing  GISO, §4242
Forging machines  GISO, §4239
Inspections  GISO, §4243 
Lock-Out Procedure GISO, §4242(a)
Maintenance, General GISO, §4243   
Lock-Out Procedure during  GISO, §4242(a)
Steam hammers  GISO, §4243 
Grounding, Electrical, Cord- & Plug-connected  ESO-LV, §2395.45(a)
Guarding of Metal Working Machines
Abrading buffing and polishing machines GISO, §4237
Alligator shears  GISO, §4236 
Metal embossing machines  GISO, §4228 
Metal shears  GISO, §4227
Tumbling barrels  GISO, §4238
Hammer
Board Drop Hammers GISO, §4241
Power-Driven & Air-Lift Hammer GISO, §4240
Hoods, Circular metal-cutting saws  GISO, §4231
Hot Trimming Presses, Mechanical & Hydraulic  GISO, §4242
Inspection  GISO, §4243
Maintenance   GISO, §4243 
Metal Embossing Machines (Class B) GISO, §4228
Metal Shears GISO, §4227 
Planers (Class A)  GISO, §4235
Polishing, Buffing & Abrading Machine (Class A) GISO, §4237
Power-Driven & Air-Lift Hammers GISO, §4240
Saws, Circular Metal Cutting GISO, §4231
Steam Hammers  GISO, §4240
Treadle Controls GISO, §4230
Trimming Presses, Mechanical & Hydraulic  GISO, §4242
Tumbling Barrels (Class A) GISO, §4238
Wire Drawing Machine (Class B) GISO, §4234
METHACRYLALDEHYDE
Process safely management for acutely hazardous substances  GISO, §5189, Appx A
METHACRYLIC ACID, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHACRYLOYL CHLORIDE
Process safety management for acutely hazardous substances  GISO, §5189, Appx A
METHACRYLOYLOXYETHYL ISOCYANATE
Process safety management for acutely hazardous substances  GISO, §5189, Appx A
METHANE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOMYL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOXYCHLOR (Moxie), Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOXYETHANOL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOXYETHYL ACETATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOXYFLURANE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHOXYPHENOL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ACETATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ACETYLENE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ACETYLENE-PROPADIENE MIXTURE, Airborne Contaminant
Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ACRYLATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLACRYLONITRILE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
METHYLAL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ALCOHOL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLAMINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
METHYL AMYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLANILINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLBENZENE, (Toluene) Airborne Contaminant, Exposure limit GISO, §5155, & Appx A 
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL BROMIDE,  Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management  GISO, §5189, Appx A
METHYL BUTYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL CHLORIDE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
METHYL CHLOROFORM, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL CHLOROFORMATE
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
METHYL CHLOROMETHYL ETHER    See CARCINOGENS, Specified+G17272
METHYL CYANOACRYLATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLCYCLOHEXANE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLCYCLOHEXANOL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLCYCLOHEXANONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLCYCLOPENTADIENYL MANGANESE TRICARBONYL
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL DEMETON, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLENEBIS, 4,4’ (2-Chloroaniline) (MbOCA) GISO, §5215  
”                      ”                  ”                      ” See Also CARCINOGENS, Regulated
Application & Scope  GISO, §5215(a)
Definitions  GISO, §5215(b)
Analytical Methods GISO, §5215, Appx C
Controlled access areas GISO, §5215(e)
Control Methods  GISO, §5215(f)
Engineering controls GISO, §5215(f)(1)  
Written Plan GISO, §5215(f)(2)
Decontamination GISO, §5215(i)  
Disposal of GISO, §5215(i)
Emergency procedures GISO, §5215(h)  
Exposure limit GISO, §5215(c)  
See also   
Hazardous Operations & Emergencies  GISO, §5215(h)
Labels/Signs GISO, §5215(l)  
Medical Surveillance GISO, §5215(k)
Medical Information, supplemental GISO, §5215, Appx B 
Methods of Control  GISO, §5215(f)
Engineering controls GISO, §5215(f)(1)  
Written Plan GISO, §5215(f)(2)
Monitoring  GISO, §5215(d)  
Training GISO, §5215(j)
Permissible Exposure Limit (PEL)  GISO, §5215(c)
Physical & Chemical Data GISO, §5215, Appx A
Record keeping GISO, §5215(m)
Respiratory Protection GISO, §5215(g)
Selection, Provision, & Use  GISO, §5215(g)(2)
Respiratory Selection Table  GISO, §5215(g)(2) 
Signs & Labels GISO, §5215(l)
Training  GISO, §5215(j)
Waste, Disposal of  GISO, §5215(i)
METHYLENE BIS CYCLOHEXYLISOCYANATE
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLENE BIS PHENYL ISOCYANATE
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLENE CHLORIDE (MC) GISO, §5202
Application & Scope GISO, §5202(a)
Definitions  GISO, §5202(b)
Appendices GISO, §5202(p)
Communication of hazards, Employer Duty  GISO, §5202(k)
Data sheet, Health Hazard GISO, §5202, Appx A
Effective Dates GISO, §5202(n)
Emergencies, Respirator Protection GISO, §5202(g)(1)
Employee Information & Training GISO, §5202(l)
Exposure monitoring  GISO, §5202(d)
Exposure limits 
Eight-hour time-weighted average (TWA) PEL GISO, §5202(c)(1)
Short-term exposure limit (STEL)  GISO, §5202(c)(2)
Fires, Emits hazardous fumes such as phosgene, hydrogen chloride and carbon monoxide GISO, §5202, Appx A 
First Aid Procedure GISO, §5202, Appx A
Handling, Use, & Storage  GISO, §5202, Appx A
Hazard Communication, Employer Duty GISO, §5202(k)
Hygiene Facilities GISO, §5202(i)
Identification of GISO, §5202, Appx A
Medical Surveillance GISO, §5202(j)
Methods of compliance GISO, §5202(f)
Monitoring, Exposure  GISO, §5202(d)
Monitoring Methods GISO, §5202, Appx A
Permissible exposure limits (PELS)  GISO, §5202(c)
Eight-hour time-weighted average (TWA) PEL GISO, §5202(c)(1)
Short-term exposure limit (STEL)  GISO, §5202(c)(2)
Protective Work Clothing & Equipment GISO, §5202(h)
Record keeping  GISO, §5202(m)
Regulated areas GISO, §5202(e)
Reporting requirements Pursuant to §5203 GISO, §5202(o)
Respiratory protection GISO, §5202(g)
Storage  GISO, §5202, Appx A
Technical Data & Guidelines  GISO, §5202, Appx A
Training GISO, §5202(l)
Use, Handling & Storage  GISO, §5202, Appx A
METHYLENEDIANILINE, Operations subject to CSO CSO, §1535
Airborne Exposure limits  GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Application & Scope  CSO, §1535(a)
Appendices CSO, §1535(r)
Change Room  CSO, §1535(h)
Cleaning of Work Site CSO, §1535(m)
   Communication among employers CSO, §1535(d)
Communication of hazards to employees  CSO, §1535(l)
Definitions, For the purpose of §1535 CSO, §1535(b)  
Effective Dates Of the Standard  CSO, §1535(s)
Emergencies  CSO, §1535(e)
Exposure monitoring  CSO, §1535(f)
Housekeeping / Cleaning of Work Site CSO, §1535(m)  
Hygiene facilities & practices  CSO, §1535(k)
Medical surveillance  CSO, §1535(n)
Guidelines GISO, §5200, Appx C
Methods of compliance CSO, §1535(h)  
Monitoring  CSO, §1535(f)
Observation of monitoring  CSO, §1535(p)
Permissible exposure limits CSO, §1535(c)  
Protective work clothing & equipment  CSO, §1535(j)  
Qualitative & Quantitative Fit Testing GISO, §5144, Appx A
Record keeping   CSO, §1535(o)
Regulated areas  CSO, §1535(g)
Reporting requirements, Pursuant to §5203  CSO, §1535(q)
Respiratory protection  CSO, §1535(i)
Sampling & Analytical Methods Guidelines GISO, §5200, Appx D 
Substance Data Sheet for MDA  GISO, §5200, Appx A
Technical Guidelines  GISO, §5200, Appx B
Worksite Cleaning CSO, §1535(m)
METHYLENEDIANILINE, Operations subject to GISO GISO, §5200
Airborne Exposure limits  GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Application & Scope  GISO, §5200(a)
Appendices GISO, §5200(q)
Change Room  GISO, §5200(i)
Cleaning of Work Site GISO, §5200(l)
Communication of hazards to employees  GISO, §5200(k)
Definitions, For the purpose of §5200 GISO, §5200(b)  
Effective Dates Of the Standard  GISO, §5200(r)
Emergencies  GISO, §5200(d)
Exposure monitoring  GISO, §5200(e)
Housekeeping / Cleaning of Work Site GISO, §5200(l)  
Hygiene facilities & practices  GISO, §5200(i)
Medical surveillance  GISO, §5200(m)
Guidelines GISO, §5200, Appx C
Methods of compliance GISO, §5200(g)  
Monitoring  GISO, §5200(e)
Observation of monitoring  GISO, §5200(o)
Permissible exposure limits GISO, §5200(c)  
Protective work clothing & equipment  GISO, §5200(i)  
Qualitative & Quantitative Fit Testing GISO, §5144, Appx A
Record keeping   GISO, §5200(n)
Regulated areas  GISO, §5200(f)
Reporting requirements Pursuant to §5203  GISO, §5200(p)
Respiratory protection  GISO, §5200(h)
Sampling & Analytical Methods Guidelines GISO, §5200, Appx D 
Substance Data Sheet for MDA  GISO, §5200, Appx A
Technical Guidelines  GISO, §5200, Appx B
Worksite Cleaning GISO, §5200(l)
METHYL ETHYL KETONE (MEK), Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ETHYL KETONE PEROXIDE
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management   GISO, §5189, Appx A
METHYL FLUOROACETATE
Process safety management  GISO, §5189, Appx A
METHYL FLUOROSULFATE
Process safety management  GISO, §5189, Appx A
METHYL FORMATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL HYDRAZINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management   GISO, §5189, Appx A
METHYL IODIDE
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management   GISO, §5189, Appx A 
METHYL IODINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ISOAMYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ISOBUTYL CARBINOL, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ISOBUTYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL ISOCYANATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
METHYL ISOPROPYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL MERCAPTAN, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Process safety management  GISO, §5189, Appx A 
METHYL METHACRYLATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL PARATHION, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL PROPYL KETONE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL SILICATE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLSTYRENE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYL TERT BUTYL ETHER (MTBE)
Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
METHYLTRICHLOROSILANE
Process safety management for acutely hazardous substances  GISO, §5189, Appx A
METHYL VINYL KETONE
Process safety management for acutely hazardous substances  GISO, §5189, Appx A
METRIBUZIN, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MEVINPHOS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MICE, Work Place Control of  GISO, §3362(f)
MICROTOMES GISO, §3558
Definition GISO, §3207
Guarding Requirement Exception GISO, §4184
Operating Requirements GISO, §3558
Control of Energized Parts per §3314 GISO, §3558(e)
Foot Treadle, Guarding GISO, §3558(d), (f)
Forceps Use GISO, §3558(b), (c)
Maintenance / Adjustments GISO, §3558(e)
Manufacturer's Recommendations GISO, §3558(a)
Minimum Clearance, from Moving Parts / Blades GISO, §3558(b)
Qualified Persons GISO, §3558(a)
Tissue Retrieval GISO, §3558(c)
Training GISO, §3558(g)
MICROWAVE RADIATION, Protection from, per GISO GISO, §5085
MICROWAVE RADIATION, Protection from, per TelSO TelSO, §8617(a) 
MICROWAVE TRANSMISSION TelSO, §8618 
Eye Protection TelSO, §8617(a)
Hazardous Areas TelSO, §8618(a)
Protective Measures TelSO, §8618(b)
MIDRAILS & HANDRAILS, per CSO CSO, §1620
Design Specifications, General GISO, §3209
Elevator shafts  CSO, §1633(a)
Floor openings    CSO, §1717(d)(4)
Formwork and shoring CSO, §1717(d)(4)
Metal scaffolds   CSO, §1644(a)(6)
Perimeters   CSO, §1717(d)(4)
Scaffolding
Metal CSO, §1644(a)(6)
Wood Pole, Heavy Trade   CSO, §1641(e)
Wood Pole, Light Duty, Railings   CSO, §1640(b)(4)
Wood Pole, Light Duty, Railings   CSO, §1640(c)(6)
Specifications, General GISO, §3209
Stairs(ways) CSO, §1626(c)(4)
Illustration CSO, §1938, Appx B, Plates B-17
Temporary Stairs(ways) CSO, §1626(d)
Wall opening, extension platform   CSO, §1632(k)
Wall opening, platform size   CSO, §1632(i), (j)
MIDRAILS & HANDRAILS, per GISO
Balconies    GISO, §3210(a)
Crane Boom, Access to GISO, §4926(b)
Design Requirements  GISO, §3209
Elevated Locations, Required at GISO, §3210
Elevating Work Platforms GISO, §3642(a)
Design Requirements  GISO, §3209
Interlocked, revolving drums GISO, §4238(a)
Scaffolding
Tower, General Requirements GISO, §3622(f)(7)
Illustrations, Scaffolds  
Light-Trade Pole Scaffold GISO, §1938, Appx B, Plate B-18
Heavy-Trade Pole Scaffold GISO, §1938, Appx B, Plate B-19
Wooden Brackets Scaffold GISO, §1938, Appx B, Plate B-20
Metal Bracket Scaffold GISO, §1938, Appx B, Plate B-21
Limit Spans to 7'6' GISO, §1938, Appx B, Plate B-22
Specifications for Stairs GISO, §3214
Stairs(ways) GISO, §3231(a)
Illustration GISO, §3231, Figure E-1
Stairs, Fixed Industrial GISO, §3234(g)
Standard Guard Railings, Specifications GISO, §3209
Wall Openings, at GISO, §3211
MIDRAILS / HANDRAILS & TOEBOARD, Exemption, per TelSO TelSO, §8602(b)
MILLS, HOG     GISO, §4298
MINERAL DUST, Airborne Contaminant, Exposure limit  GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MINE SAFETY ORDERS (MSO) MSO, Subchapter 17
Application MSO, §6954
Contractors, Responsibility of MSO, §6957
Definitions MSO, §6958
Excerpts from the Labor Code MSO, §6953
Permits for variations from these Orders MSO, §6956
Purpose of MSO MSO, §6952
Scope MSO, §6955
Superseded Orders MSO, §6951
Title of the MSO MSO, §6950
MINE SHAFTS MSO, Article 35
Deepening an Operating Shaft MSO, §7114
Hoisting While Sinking or Enlarging Shaft MSO, §7116
Hoists at Shafts with 1 Exit MSO, §7124
Inspections of MSO, §7161
Manways Compartment MSO, §7117
Protection Against Falling Materials MSO, §7113
Shaft Guarding MSO, §7110
Shaft Safety Pillars MSO, §7118
Shaft Work, Maintenance & Repair, General MSO, §7111
Shaft Work, Major Repair MSO, §7112
Special Power-Driven Shaft Equipment MSO, §7115
MINING EQUIPMENT & PRACTICES  MSO, Article 15
”          ”           ”            ”           ”            ” See Also MINING OPERATIONS, Equipment
Air Hose Requirements MSO, §6997
Boilers & Pressure Vessels MSO, §6996
Hydraulic Monitor MSO, §6998
Mining Equipment & Practices MSO, §6995
Rock Crushers MSO, §6999 
Underground Machines, Power Shutoff  MSO, §7001
Working Space for Machine Operators, Underground MSO, §7000
MINING OPERATIONS, Drilling Operations
General Requirements, condition MSO, §7005(a)
General Requirements, iron or steel hammers MSO, §7005(b)
General Requirements, explosives MSO, §7005(c)
Jumbos, Construction & Use MSO, §7007
Surface Mining Operations, more than five feet from explosives MSO, §7005(d)
Surface Mining Operations, drill holes, covered or plugged MSO, §7005(e)
Surface Mining Operations, erected drill masts MSO, §7005(f)
Surface Mining Operations, inspect for hazards before MSO, §7005(g)
Surface Mining Operations, moving drill stems or augers MSO, §7005(h)
Surface Mining Operations, transporting drill and other tools MSO, §7005(i)
Surface Mining Operations, power failure MSO, §7005(j)
Surface Mining Operations, drills to be attended while in operation MSO, §7005(k)
Surface Mining Operations, hands to be kept free from drill steel , chuck, or centralizer MSO, §7005(l)
Surface Mining Operations, drill stem secured to mast MSO, §7005(m)
Surface Mining Operations, mandatory standards for rotary jet piercing MSO, §7005(n)
Underground Mining Operations MSO, §7006
MINING OPERATIONS, Electrical Installations
Scope ESO-HV, §2914(a)
Other Orders ESO-HV, §2914(b)
Below Ground Equipment / Switches ESO-HV, §2918
Bonding & Equipment Conductor ESO-HV, §2917
Conductor Insulation Approved for ESO-HV, §2916(b)
Disconnecting Means ESO-HV, §2921
Enclosure of Energized Parts ESO-HV, §2919
Enclosures, Specifications & Use ESO-HV, §2922
General  ESO-HV, §2914(c)
Grounding of Mining / Tunneling Equipment ESO-HV, §2923
Over-current Protection  ESO-HV, §2915
Ventilation System Controls  ESO-HV, §2920
Electrical Equipment & Practices, Per MSO MSO, Article 47
Cables, Trailing Electrical Power Cables, General MSO, §7181
Maintenance & Repair of MSO, §7182
Electrical Equipment & Installations MSO, §7180
Federal Electrical Standard MSO, §7183
MINING OPERATIONS, General Requirements
Accident Prevention Program MSO, Article 4
Competent Person Requirement MSO, §6966
Reporting of Unsafe Conditions MSO, §6965
Safety Bulletin Board Requirements MSO, §6962
Safety Committee MSO, §6964
Safety Representatives, Certification of MSO, §6967
Safety Training & Instructions MSO, §6963
Supervision of Work & Employees MSO, §6966
Training & Instructions, Safety MSO, §6963
Air Hose Requirements MSO, §6997
Air Quality, Radiation & Ventilation MSO, Article 31 
Environmental Controls MSO, §7090
Blasting  MSO, §7095
Dust Control
Blasting, Primary MSO, §7095
Blasting, Secondary MSO, §7096
Surface Drilling MSO, §7092
Underground Rock Drilling MSO, §7093
  Mucking & Transferring Rock MSO, §7094 
Smoke & Gas Control
Blasting, Primary MSO, §7095
Blasting, Secondary MSO, §7096
Radiation, Underground MSO, §7091
Surface operations MSO, §7092
Underground operations MSO, §7093
Ventilation MSO, §7098
Mechanical Ventilation MSO, §7099
Bank Face, Free from Loose Material MSO, §6984
Bearing Sets MSO, §6991
Canopy Guard MSO, §7020
Checklist, Mine Entry MSO, §6974
Chutes & Ore Passes  MSO, §7052
Change Rooms MSO, §6977
Combustible Liquids & Gases, Surface Storage MSO, §7064
Competent Person Requirement MSO, §6966
Compressed Gas & Liquid Cylinders Storage MSO, §6982(d)
Valves Protection Requirement  MSO, §6982(e)
Cranes / Hoists & Hoisting Equipment See MINING OPERATIONS, Hoisting Equipment & Cranes
Dams, Water Retaining MSO, §7175
Underground Protection from Water  MSO, §7176
Dangerous Excavations at Underground Mines MSO, §7178
Drilling Operations MSO, §7005
Drinking Water MSO, §6975
Drowning Hazard, Life Jackets MSO, §6980(a)
Dumping, Loading & Hauling, General Requirements MSO, §7010
Parts Subject to Wear  MSO, §7011
Dust Control 
Dust, Smoke & Gases after Blasting MSO, §7095
Dust, Smoke & Gases, Secondary Blasting MSO, §7096
Mechanical Ventilation MSO, §7099
Mine Ventilation MSO, §7098
Mucking & Transferring Rock MSO, §7094
Mucking & Transferring Rock, Dust Control MSO, §7094
Radiation Hazards, Underground MSO, §7091
Rock Drilling, Dust Control MSO, §7093
Rock Drilling Requirements MSO, §7093
While Drilling MSO, §7092
Electrical Equipment & Practices MSO, Article 47
Emergency Plan, Underground MSO, §7074
Emergency Alarm System, Underground MSO, §7075
Emergency Telephone MSO, §7165 
Escapeways & Refuge Stations MSO, §7080
Fire & Safety Diagram MSO, §7076
Maps  MSO, §7077
Mine Rescue Equipment & Supplies MSO, §7084
Use of Rescue Equipment MSO, §7086
Mine Rescue Stations MSO, §7083
Mine Rescue Training & Procedure MSO, §7085
Refuge Stations  MSO, §7081
Engines, Internal Combustion MSO, Article 25
Fueling of Diesel Engines, Underground MSO, §7071
Permitted Use of Diesel Engines, Underground MSO, §7070
Prohibition of Engine Near Mine Opening  MSO, §7068
Prohibition of Engines Underground MSO, §7069
Environmental Controls MSO, §7090
Excavations at Underground Mines, Dangerous MSO, §7178
Excavations of Sand, Gravel & Similar Material MSO, §6985
Sloping Requirements & Specifications MSO, §6985(a)-(e)
Eye, Face Protection, General MSO, §6980(f)
When Using a Grinding Wheel MSO, §6980(g)
When Using a Welder, Cutter, or Molten Metal  MSO, §6980(h)
Face Inspection & Control MSO, §6988
Fall Protection
Bin, Bunkers, Other Storage Containers, Entry into  MSO, §6981(a)
Life Lines & Safety Belts MSO, §6981 
Damaged Life Lines MSO, §6981(b)
Replacing Damaged Life Lines MSO, §6981(c)
Safety Belts, Type Approval By Cal/OSHA  MSO, §6981(f)
Securing of Life Lines MSO, §6981(e)
Size of Life Lines MSO, §6981(b)
Inspection of Life Lines MSO, §6981(d)
Fire Doors & Fire Bulkheads MSO, §7058
Fire Fighting Equipment MSO, §7063
Fire Prevention & Control MSO, Article 22
Combustible Liquids & Gases Surface Storage MSO, §7064
Fire Doors & Fire Bulkheads MSO, §7058
Fire Fighting Equipment MSO, §7063
Fire Prevention & Control, General Requirements MSO, §7055
Fire Prevention, Underground MSO, §7060
Heating Devices, Underground MSO, §7061
Mine Exit Protections MSO, §7057
Mine Housekeeping MSO, §7062
Surface Structures Over or Near Mines (Openings) MSO, §7056
Underground Storage
Combustible Liquids & Gases MSO, §7064
Fuels, Lubricants & Rope Dressings MSO, §7065 
Fire Prevention, Underground MSO, §7060
First-Aid Supplies / Equipment for Care of Injured MSO, §6969
First-Aid Training  MSO, §6968
Medical Treatment Advance Arrangements MSO, §6968(g)
Surface Operations, Trained Individuals MSO, §6968(b)
Underground Mining, Trained Individuals MSO, §6968(a)
Floors of Pits & Quarries MSO, §6987
Foot wear, Safety MSO, §6980(d), (e)
Fuels, Storage & Handling MSO, §7065
Gases, Control of
After Blasting MSO, §7095
Dangerous Accumulations in Mines MSO, §7102
From Secondary Blasting MSO, §7096 
Gassy Mine Classification MSO, §7103
Gassy Mine Operation MSO, §7106
Mechanical & Electrical Equipment for Gassy Mines  MSO, §7105
Tests for Gases in Mines MSO, §7104
Gassy Mine Operations MSO, §7106
Dangerous Accumulations in Mines MSO, §7102
Gassy Mine Classification MSO, §7103
Gassy Mine Operation MSO, §7106
Mechanical & Electrical Equipment for MSO, §7105
Tests for Gases in Mines MSO, §7104
Gravel, Sand & Similar Material, Excavations of MSO, §6985
Ground Control MSO, Article 12 
Bearing Sets MSO, §6991
Excavations of Sand, Gravel & Similar Material MSO, §6985
Face Inspection & Control MSO, §6988
Floors of Pits & Quarries MSO, §6987
Overburden MSO, §6986
Pit Bank or Face, Free from Loose Material MSO, §6984
Tirnbering, Underground MSO, §6990
Worker Protection at the Face MSO, §6989
Hard Hats  MSO, §6980(b)
Haulage Vehicle, Construction & Maintenance MSO, §7016
Canopy Guard MSO, §7020
Haulage Vehicle, Definition MSO, §7015
Haulage Vehicle Operation Procedure  MSO, §7021
Hauling, Loading & Dumping, General Requirements MSO, §7010
Parts Subject to Wear  MSO, §7011
Hazardous Materials Labeling MSO, §6982(c)
Hazardous Materials Storage, Handling MSO, §6982(b)
Heating Devices, Underground, Fire Prevention MSO, §7061
Hoists & Hoisting Practices See MINING OPERATIONS, Hoisting Equipment & Cranes
Hydraulic Monitor MSO, §6998
Illumination
Surface Mining MSO, §6992
Underground Mining MSO, §6993
Industrial Railroads  MSO, §7023
Injured Personnel, 
Care of MSO, §6969(f)
Transportation of  MSO, §6969(i)
Inspection
Daily Inspections MSO, §7160
Face Inspection  MSO, §6988
Fall Protection, Life Lines MSO, §6981(d)
Monthly Inspections MSO, §7162
Pre-work Safety Inspection MSO, §6973(d)
Shaft Inspections MSO, §7161
Intoxication Prohibited MSO, §6973(c)
Ladders MSO, §7040 
Flexible, Construction of, Underground Use MSO, §7043
Installations & Manways MSO, §7044
Metal, Construction of, Underground Use MSO, §7042
Wooden, Construction of, Underground Use MSO, §7041
Loading, Hauling & Dumping, General Requirements MSO, §7010
Parts Subject to Wear  MSO, §7011
Lubricants, Storage & Handling MSO, §7065
Manways, Stairways & Runways MSO, §7044
Materials Storage & Handling MSO, §6982 
According to GISO Requirements MSO, §6982(a)
Compressed Gas & Liquid Cylinders Storage MSO, §6982(d)
Valves Protection Requirement  MSO, §6982(e)
Cranes & Hoisting Equipment MSO, §6982(g)
Hazardous Materials Labeling MSO, §6982(c)
Hazardous Materials Storage, Handling MSO, §6982(b)
Riding on Suspended Load / Hooks Prohibited MSO, §6982(h)
Exception to this Prohibition MSO, §6982(h)
Suspended Load, Staying Clear of MSO, §6982(f)
Mechanical Haulage Refuge Stations MSO, §7026
Mine Entry, Checklist MSO, §6974
Mine Exit Protections MSO, §7057
Mine Housekeeping MSO, §7062
Number of Workers, Solitary Employment Prohibition MSO, §6973(g), (k)
Openings, Winzes & Raises MSO, §7051
Ore Passes & Chutes  MSO, §7052
Overburden MSO, §6986
Pit Bank or Face, Free from Loose Material MSO, §6984
Power Shut-off, Underground Machinery  MSO, §7001
Private Roads, Construction, Maintenance MSO, §7014
Radiation Hazards, Underground MSO, §7091
Raises, Winzes & Openings MSO, §7051
Refuge Stations MSO, §7081
Refuge Stations along Haulageway MSO, §7026
Respiratory Protection, General MSO, §7090(e)
Respiratory Protection, Dangerous Accumulations in Mines MSO, §7102(e)
Rescue Breathing Apparatus MSO, §7084)
Use of MSO, §7086)
Riding on Suspended Load / Hooks Prohibited MSO, §6982(h)
Exception to this Prohibition MSO, §6982(h)
Runways, Manways & Stairways MSO, §7044
Safe Worksite, Requirement MSO, §6973(a), (b)
Safety Bulletin Board Requirements MSO, §6962
Shafts, Mine MSO, Article 35
Deepening an Operating Shaft MSO, §7114
Hoisting Equipment  See MINING OPERATIONS, Hoisting Equipment & Cranes
Hoisting While Sinking or Enlarging Shaft MSO, §7116 
Inspections of MSO, §7161
Manway Compartment MSO, §7117
Protection Against Falling Materials MSO, §7113
Shaft Guarding MSO, §7110
Shaft Safety Pillars MSO, §7118
Shaft Work, Maintenance & Repair, General MSO, §7111
Shaft Work, Major Repair MSO, §7112
Special Power-Driven Shaft Equipment MSO, §7115
Smoke & Gases, Control of
After Blasting MSO, §7095
After Secondary Blasting MSO, §7096
Solitary Employment Prohibition MSO, §6973(g), (k)
Exception, With Communication or Visual MSO, §6973(g)
Stairways, Manways & Runways MSO, §7044
Stopes, Underground MSO, §7050
Suspended Load, Staying Clear of MSO, §6982(f)
Tirnbering, Underground MSO, §6990
Transporting Personnel, General MSO, §7037
Underground Transportation of Personnel MSO, §7038
Code, Signals for Hoisting Operations MSO, §7141
Conveyance Specifications, Inclined Shaft MSO, §7133
Conveyance Specifications, Vertical Shaft MSO, §7132
First-Class Hoist Required MSO, §7125
First-Class Hoist Specifications MSO, §7126
Employee Transport, General MSO, §7037
Underground Transport of Employees MSO, §7038
Material & Tool Transport, Shaft Conveyance MSO, §7148
Hoisting Personnel, General Practices MSO, §7147
Loading Personnel on Conveyance MSO, §7146
Tool & Material Hoisting MSO, §7148
Material Hoist use prohibition MSO, §7121(a)
Signals for Hoisting Operations MSO, §7141
Travelways, General MSO, §7046
Underground Storage
Combustible Liquids & Gases MSO, §7064
Fuels, Lubricants & Rope Dressing MSO, §7065
Water, Protection Against MSO, Article 45
Retaining Dams MSO, §7175
Underground Protection  MSO, §7176
Winzes, Raises & Openings MSO, §7051
Worker Protection at the Face MSO, §6989
Working Platforms MSO, §7048
Working Space for Machine Operators, Underground MSO, §7000 
MINING OPERATIONS, Equipment
Aerial Tramway, General MSO, §7035
Air Hose Requirements MSO, §6997
Belt Conveyors in Mines MSO, §7032
Bin, Bunkers, Other Storage Containers, Entry into  MSO, §6981(a)
Boilers & Pressure Vessels MSO, §6996
Chutes & Ore Passes  MSO, §7052
Conveyors, General Requirements MSO, §7030
Belt Conveyors in Mines MSO, §7032
Conveyor Passage MSO, §7031
Cranes & Hoisting Equipment MSO, §6982(g)
Cranes & Loading Devices MSO, §7012
Surface Operations MSO, §6976
Showers MSO, §6976(a)
Underground Mines MSO, §6977
Showers MSO, §6977(c)
Diesel Engines
Fueling of Diesel Engines, Underground MSO, §7071
Permitted Use of Diesel Engines, Underground MSO, §7070
Prohibition of Engine Near Mine Opening  MSO, §7068
Prohibition of Engines Underground MSO, §7069
Draglines, Parts Subject to Wear  MSO, §7011
Draglines, Shovels & Loading Devices MSO, §7012
Electrical Equipment & Practices MSO, Article 47
” ”           ”            ”            ”      See MINING OPERATIONS, Electrical Installations
Cables, Trailing Electrical Power Cables, General MSO, §7181
Maintenance & Repair of MSO, §7182
Electrical Equipment & Installations MSO, §7180
Federal Electrical Standard MSO, §7183
Engines, Internal Combustion MSO, Article 25
Fueling of Diesel Engines, Underground MSO, §7071
Permitted Use of Diesel Engines, Underground MSO, §7070
Prohibition of Engine Near Mine Opening  MSO, §7068
Prohibition of Engines Underground MSO, §7069
Fire Doors & Fire Bulkheads MSO, §7058
Fire Fighting Equipment MSO, §7063
Haulage Vehicle, Construction & Maintenance MSO, §7016
Canopy Guard MSO, §7020
Haulage Vehicle, Definition MSO, §7015
Haulage Equipment, Trackless & Practices MSO, §7018
Haulage Vehicle Operation Procedure  MSO, §7021
Heating Devices, Underground, Fire Prevention MSO, §7061
Hoisting Equipment See MINING OPERATIONS, Hoisting Equipment, Use of
Hoisting Equipment, Parts Subject to Wear  MSO, §7011
Industrial Railroads  MSO, §7023
Internal Combustion Engines Prohibited MSO, §7069
Fueling of Diesel Engines, Underground MSO, §7071
Permitted Use of Diesel Engines, Underground MSO, §7070
Prohibition of Engine Near Mine Opening  MSO, §7068
Prohibition of Engines Underground MSO, §7069
Ladders MSO, §7040 
Flexible, Construction of, Underground Use MSO, §7043
Installations & Manways MSO, §7044
Metal, Construction of, Underground Use MSO, §7042
Wooden, Construction of, Underground Use MSO, §7041
Loading Devices, Cranes, Draglines & Shovels MSO, §7012
Equipment Lubricants, Storage & Handling MSO, §7065
Manways, Stairways & Runways MSO, §7044
Ore Passes & Chutes  MSO, §7052
Power Shut-off, Underground Machinery  MSO, §7001
Railroads, Industrial  MSO, §7023 
Rescue Breathing Apparatus MSO, §7084)
Respiratory Protection, Dangerous Accumulations in Mines MSO, §7102(e)
Rock Crushers MSO, §6999
Runways, Manways & Stairways MSO, §7044
Scaffolds  MSO, §7048
Shovels, Cranes, Draglines & Loading Devices MSO, §7012
Shovels, Parts Subject to Wear  MSO, §7011
Stairways, Manways & Runways MSO, §7044
Storage Containers, Entry into  MSO, §6981(a)
Telephone System MSO, §7164
Emergency Telephone MSO, §7165
Telephones for Shaft Work MSO, §7166
Trackless Mine Haulage Equipment & Practices MSO, §7018
Canopy Guard MSO, §7020
Trains, Equipment & Practice, General MSO, §7024
Trains, Equipment & Practice, Underground MSO, §7025
Tramway, Aerial MSO, §7035 
Underground Machines, Power Shutoff  MSO, §7001
Working Platforms MSO, §7048(a)
Working Space for Machine Operators, Underground MSO, §7000
MINING OPERATIONS, Haulage Vehicles
Canopy Guard  MSO, §7020
Construction & Maintenance MSO, §7016
Definition of Haulage Vehicle MSO, §7015
Hauling, Loading & Dumping, General Requirements MSO, §7010
Haulage Vehicle Operation Procedure  MSO, §7021
Parts Subject to Wear  MSO, §7011
MINING OPERATIONS, Hoisting Equipment & Cranes
Cranes & Hoisting Equipment MSO, §6982(g)
Cranes & Loading Devices MSO, §7012
Surface Operations MSO, §6976
Underground Mines MSO, §6977
Design of Headframes MSO, §7128
First-Class Hoists MSO, §7126
Hoist for Hoisting Personnel  MSO, §7125
Hoist Signal System  MSO, §7139
Dual Signaling System MSO, §7140
Hoisting Cables
Method of Attaching to Conveyance MSO, §7138
Safety Hook MSO, §7138(a)
Hoisting Equipment for Materials  MSO, §7120
Power-Driven Material Hoist MSO, §7121
Hoisting Practices MSO, Article 37
Hoisting Personnel, General MSO, §7147
Hoisting Tools & Materials MSO, §7148
Hoistmen, Qualified  MSO, §7150
Hoistmen Required on Duty MSO, §7149
Loading Personnel on Conveyance MSO, §7146
Hoisting Ropes
Maintenance of Hoisting Rope MSO, §7136
Method of Attaching to Conveyance MSO, §7137
Safety Factor & Inspections MSO, §7135
Hoisting Signal Code MSO, §7141
Hoists MSO, §7123
Hoists at Shafts with 1 Exit MSO, §7124
Lubricating Sheaves, Rollers & Hoisting Equipment MSO, §7143
Parts Subject to Wear  MSO, §7011
Personnel Conveyances in Inclined Shaft MSO, §7133
Personnel Conveyances in Vertical Shaft  MSO, §7132
Personnel Hoisting MSO, §7125
Shaft Conveyances, General MSO, §7129
Shaft Guides MSO, §7130
Shaft Tracks MSO, §7131
Station Signal Boards MSO, §7142
Whims & Windlasses MSO, §7122
MINING OPERATIONS, Surface Mining
Change Rooms MSO, §6976
Showers MSO, §6976(a)
Conveyors, General Requirements MSO, §7030
Conveyor Passage MSO, §7031
Drilling Operations MSO, §7005
Electrical Requirements See MINES, Electrical Installations
Ground Control MSO, Article 12 
Excavations of Sand, Gravel & Similar Material MSO, §6985
Face Inspection & Control MSO, §6988
Floors of Pits & Quarries MSO, §6987
Overburden MSO, §6986
Pit Bank or Face, Free from Loose Material MSO, §6984
Worker Protection at the Face MSO, §6989
Illumination MSO, §6992
MINING OPERATIONS, Underground
Air Borne Contaminants & Environmental Controls
Dust Control 
Dust, Smoke & Gases after Blasting MSO, §7095
Dust, Smoke & Gases, Secondary Blasting MSO, §7096
Mechanical Ventilation MSO, §7099
Mine Ventilation MSO, §7098
Mucking & Transferring Rock MSO, §7094
Rock Drilling Requirements MSO, §7093
While Drilling MSO, §7092
Environmental Controls MSO, §7090
Radiation Hazards, Underground MSO, §7091
Bearing Sets MSO, §6991
Change Rooms MSO, §6977
Showers MSO, §6977(c)
Chutes & Ore Passes  MSO, §7052
Conditions, Unsafe  MSO, §6965
Conveyors, General Requirements MSO, §7030
Belt Conveyors in Mines MSO, §7032
Conveyor Passage MSO, §7031
Drilling Operations
Drilling holes, prohibition MSO, §7005(c)
General Requirements MSO, §7005(a)
Iron or steel hammers, design requirements MSO, §7005(b)
Jumbos, Construction & Use MSO, §7007
Underground Mining Operations MSO, §7006
Electrical Requirements See MINES, Electrical Installations
Emergency Alarm System, Underground MSO, §7075
Emergency Plan MSO, §7074
Emergency Alarm System MSO, §7075
Emergency Telephone MSO, §7165 
Escapeways & Refuge Stations MSO, §7080
Fire & Safety Diagram MSO, §7076
Maps  MSO, §7077
Mine Rescue Equipment & Supplies MSO, §7084
Use of Rescue Equipment MSO, §7086
Mine Rescue Stations MSO, §7083
Mine Rescue Training & Procedure MSO, §7085
Refuge Stations  MSO, §7081
Engines, Internal Combustion MSO, Article 25
Fueling of Diesel Engines, Underground MSO, §7071
Permitted Use of Diesel Engines, Underground MSO, §7070
Prohibition of Engine Near Mine Opening  MSO, §7068
Prohibition of Engines Underground MSO, §7069
Escapeways & Refuge Stations MSO, §7080
Fire & Safety Diagram MSO, §7076
Gassy Mine Operations MSO, §7106
Dangerous Accumulations in Mines MSO, §7102
Gassy Mine Classification MSO, §7103
Gassy Mine Operation MSO, §7106
Mechanical & Electrical Equipment for MSO, §7105
Tests for Gases in Mines MSO, §7104
Ground Control MSO, Article 12 
Bearing Sets MSO, §6991
Tirnbering, Underground MSO, §6990
Illumination MSO, §6993
Incident Reporting to the Division, per MSO MSO, §6960(a)
Accident that increases Mining hazards MSO, §6960(a)(10)
Accumulation of gas MSO, §6960(a)(2)
Approaching Mine working w/ Gas or Water MSO, §6960(a)(6)
Crushing of Active Mine Workings MSO, §6960(a)(7)
Fatality MSO, §6960(a)(9)
Fire MSO, §6960(a)(1)
Ground Instability MSO, §6960(a)(8)
Hoisting Equipment Breakage MSO, §6960(a)(3)
Injury, Serious MSO, §6960(a)(9)
Inrush of Water, Serious MSO, §6960(a)(5)
Overwinding, Hoisting Equipment MSO, §6960(a)(4)
Ladders MSO, §7040 
Flexible, Construction of, Underground Use MSO, §7043
Installations & Manways MSO, §7044
Metal, Construction of, Underground Use MSO, §7042
Wooden, Construction of, Underground Use MSO, §7041
Maps  MSO, §7077
Mine Haulage Equipment, Trackless & Practices MSO, §7018
Mine Rescue Equipment & Supplies MSO, §7084
Use of Rescue Equipment MSO, §7086 
Mine Rescue Stations MSO, §7083
Mine Rescue Training & Procedure MSO, §7085
Mine Trains, Equipment & Practice, General MSO, §7024
Mine Trains, Equipment & Practice, Underground MSO, §7025
Openings, Winzes & Raises MSO, §7051
Ore Passes & Chutes  MSO, §7052
Power Shut-off, Underground Machinery  MSO, §7001
Radiation Hazards, Underground MSO, §7091
Raises, Winzes & Openings MSO, §7051
Refuge Stations  MSO, §7081
Refuge Stations, Mechanical Haulage MSO, §7026
Safety Representatives Requirement MSO, §6967
Shafts, Mine MSO, Article 35
Deepening an Operating Shaft MSO, §7114
Hoisting Equipment  See MINING OPERATIONS, Hoisting Equipment, Use of
Hoisting While Sinking or Enlarging Shaft MSO, §7116
Inspections of MSO, §7161
Manway Compartment MSO, §7117
Protection Against Falling Materials MSO, §7113
Shaft Guarding MSO, §7110
Shaft Safety Pillars MSO, §7118
Shaft Work, Maintenance & Repair, General MSO, §7111
Shaft Work, Major Repair MSO, §7112
Special Power-Driven Shaft Equipment MSO, §7115
Stopes, Underground MSO, §7050
Tirnbering MSO, §6990
Trackless Mine Haulage Equipment & Practices MSO, §7018
Transportation of Workers, General MSO, §7037
Transportation of Workers, Underground MSO, §7038
Underground Machines, Power Shutoff  MSO, §7001
Underground Storage
Combustible Liquids & Gases MSO, §7064
Fuels, Lubricants & Rope Dressing MSO, §7065
Ventilation MSO, §7098
Mechanical Ventilation MSO, §7099
Water, Protection Against MSO, Article 45
Retaining Dams MSO, §7175
Underground Protection  MSO, §7176
Winzes, Raises & Openings MSO, §7051
Worker Protection at the Face MSO, §6989
Working Platforms MSO, §7048
Working Space for Machine Operators, Underground MSO, §7000
MINING ROADS, Construction and maintenance  MSO, §7014
MISTS, Control of Hazards See DUSTS, FUMES, MISTS, VAPORS & GASES
MISTS, Control of Dangerous, per PSO-R,T&H PSO-R,T&H, §6788
MITER SAWS, Woodworking GISO, §4307.1
MIXERS, Cement See HAULAGE EQUIPMENT
MIXERS, Concrete CSO, §1698(a) 
Guardrail requirements CSO, §1698(b)
MIXERS, Food Service  GISO, §4542
MIXERS, Mortar, Plaster & Fireproofing CSO, §1698(e)
MLT (Malathion), Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MOBILE  See also under PORTABLE 
MOBILE COMPACTION EQUIPMENT GISO, §4354
”            ”            ”             ”              ”             ” See also COMPACTION EQUIPMENT 
MOBILE CRANES, Boom-Type See also CRANES
Application / Purpose GISO, §4920
Access to Operators Position & Machine House GISO, §4926(a)
Access to Boom Blocks GISO, §4926(b)
Adjustments, Brake & Clutches GISO, §4932
Barge Mounted Cranes GISO, §4942
Illustrations, GISO, §4885, Plate III
Life Buoys, rings, vests GISO, §4944
Permanently Mounted GISO, §4943
Boom Block, Access to GISO, §4926
Guardrail / Grab-irons / Handholds GISO, §4926(b)
Boom Hoist Mechanisms GISO, §4928
Boom-stops GISO, §4922
Brake, Adjustments GISO, §4932
Cab, Operator’s  GISO, §4925
Clutches, Adjustments GISO, §4932
Chart, Load Rating  GISO, §4923
Controls
Lever-operated controllers GISO, §4921(a)
Marking, Labeling of Operating controls GISO, §4921(b)
Start & Stop GISO, §4921(c)
Speed Control of internal combustion engines GISO, §4921(c)
To stop engines under emergency conditions GISO, §4921(c)
Couplers, Locomotive Cranes GISO, §4927(a)
Automatic Couplers GISO, §4927(b)
Couplers, Locomotive Cranes GISO, §4927
Crane Boom-stops GISO, §4922
Cranes Used in Demolition Work GISO, §4941
Demolition Work, Use during GISO, §4941
Drowning Hazard Protection GISO, §4944
Electrical Requirements per ESO See CRANES, Requirements per ESO
Floating Cranes & Derricks, Permanent Mount GISO, §4943
Barge Mounted Cranes GISO, §4942
Illustrations, GISO, §4885, Plate III
Life Buoys, rings, vests GISO, §4944
Hoist Drums GISO, §4929
Life Jackets, Vests, Buoys, Rings GISO, §4944
Lighting, Nighttime Operations GISO, §4940
Load Lowering Systems, Power-Controlled GISO, §4932
Load Hoist Drums GISO, §4929
Hoist Brakes GISO, §4930
Load Rating Chart GISO, §4923
Load Safety Devices GISO, §4924
Locomotive Cranes, Couplers  GISO, §4927
Lowering System, Power Controlled GISO, §4932
Machine House, Access to GISO, §4926
Operating Rules See under CRANES
Operator’s Cab  GISO, §4925
Operator’s Position, Access to GISO, §4926
Operator Certification GISO, §5006.1   
Operating Controls  GISO, §4921
Lever-operated controllers GISO, §4921(a)
Marking, Labeling of Operating controls GISO, §4921(b)
Start & Stop GISO, §4921(c)
Speed Control of internal combustion engines GISO, §4921(c)
To stop engines under emergency conditions GISO, §4921(c)
Operator’s Position, Access to GISO, §4926
Operator Qualifications GISO, §5006.1
Power-Controlled Lowering Systems GISO, §4932
Rail Clamps, Locomotive Cranes GISO, §4938(b)
Sheave Guards  GISO, §4935.1
Swing Control  GISO, §4933
Swing Brake & Locking Device GISO, §4934
Travel Brakes & Locks GISO, §4935
Truck Wedges or Jacks, Locomotive Cranes GISO, §4938
Warning Device, Outside Crane GISO, §4936
Water Hazard Protection GISO, §4944
Wheel Guards, Locomotive Cranes GISO, §4937(a)
Wheel Guards on Outrigger Wheels, Mobile Cranes GISO, §4937(b)
MOBILE EQUIPMENT, Electrical   ESO-HV, Article 32
Collector Rings ESO-HV, §2909
Enclosures ESO-HV, §2908
General  ESO-HV, §2906
Grounding ESO-HV, §2912
High-Voltage Portable Main Power Supply ESO-HV, §2911
Over-current Protection  ESO-HV, §2907
Power Cable Connections to Mobile Machines ESO-HV, §2910
MOBILE EQUIPMENT, Guardrailing Exception Protection  GISO, §3210(b), Exception (9)
MOBILE EQUIPMENT, Tree Work     GISO, §3424
MOBILE LADDER STANDS & TOWER SCAFFOLDS GISO, Article 23
Scope GISO, §3620
Definitions GISO, §3621
General Requirements GISO, §3622
Mobile Ladder Stand GISO, §3627
Mobile Scaffolds
Tube & Coupler GISO, §3625
Tubular Welded Frame GISO, §3623
Tubular Welded Sectional Folding GISO, §3624
Mobile Work Platform GISO, §3626
MOBILE LOG HANDLING EQUIPMENT, Logging LSSO, §6264 
MOBILE SHOVEL, Illustration LSSO, §6402, Appx A 
MOBILE VEHICLES, Fall Protection GISO, §3210(b)(9)
MODIFICATIONS, Machinery/Equipment    GISO, §3328(f)
MODIFICATIONS, Forklifts, Power Industrial Trucks   GISO, §3650(e)
Gasoline to LP or LPS  GISO, §3650(f)
MOLD, Abatement / Prevention  GISO, §3362(g)
MOLDING MACHINES, Plastic GISO, Article 72
Injection Molding Machines GISO, §4600
Thermo Setting Plastic Molding Presses GISO, §4601
MOLDING MACHINES, Woodworking GISO, §4318
MOLTEN SALT BATHS GISO, §5188
MOLYBDENUM COMPOUNDS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MOMENTARY CONTACT DEVICES GISO, §4086
Portable Power Drives, Post Hole Digger, Pipe Threader /Cutter GISO, §4086
Portable Tools GISO, §3557
MONITORING, Workplace GISO, §5155(e)  
 ” ”           ”            ” See also under specific Substance and Operation / Procedure  
MONOCROTOPHOS, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MONOMETHYLAMINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed as Methylamine, PELS GISO, §5155, Table AC-1
Process safety management GISO, §5189, Appx A
MORPHOLINE, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MORTAR MIXER, Grid Guard CSO, §1698(e)(1), (2)
MORTISING MACHINES, Woodworking GISO, §4316
MOSQUITOS, Work Place Control of  GISO, §3362(f)
MOTION PICTURE, Projectors, Electrical ESO-LV, Article 72
Application / Scope  ESO-LV, §2554.1
Non-professional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Approval Requirement ESO-LV, §2554.20
Projector Component Parts ESO-LV, §2554.32
Booth Requirement, Slow Burning Film ESO-LV, §2554.31
Conductors
Flexible Cord Requirement ESO-LV, §2554.15
Size ESO-LV, §2554.13 
Type for Hot Equipment ESO-LV, §2554.14
Type for Lamps ESO-LV, §2554.14
Electrical Wiring
Conductor Types for Hot Equipment ESO-LV, §2554.14  
Conductor Types for Lamps & Hot  ESO-LV, §2554.14
Flexible Cords ESO-LV, §2554.15
Sizing of Conductors ESO-LV, §2554.13
Equipment, Location of ESO-LV, §2554.10
Prohibited Equipment ESO-LV, §2554.11
Flexible Cord Requirement ESO-LV, §2554.15
Illumination, Source of ESO-LV, §2554.33
Information Labels / Tags ESO-LV, §2554.21
Lamp Guards ESO-LV, §2554.16
Location of Equipment ESO-LV, §2554.10
Marking / Labels ESO-LV, §2554.21
Marking ESO-LV, §2554.34
Nonprofessional Film Marking ESO-LV, §2554.35
Nonprofessional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Prohibited Equipment ESO-LV, §2554.11
Projectors 
Marking, Information ESO-LV, §2554.34
Motor-Driven Projectors ESO-LV, §2554.12
Non-professional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Projector Component Parts ESO-LV, §2554.32
Slow Burning Film Booth Not Required ESO-LV, §2554.31
Sound Recording & Reproduction Equipment  ESO-LV, §2554.50
MOTION PICTURE, Projection Rooms GISO, §3245
MOTION PICTURE, Studios & Similar, Electrical ESO-LV, Article 71
Application / Scope  ESO-LV, §2553.1
Boxes, Receptacle ESO-LV, §2553.14 
Circuit Breakers, Over-current Protection, ESO-LV, §2553.18
Controls, Electrical, Stage Lighting & Effects ESO-LV, §2553.13
Current Carrying Parts, Enclosing & Guarding ESO-LV, §2553.15
Electrical Wiring
Sizing of Conductors ESO-LV, §2553.19
Enclosing & Guarding Live Parts  ESO-LV, §2553.15
Film storage vaults
Lamps ESO-LV, §2553.51
Prohibited equipment ESO-LV, §2553.52
Flexible Cord & Cable Requirement ESO-LV, §2553.12
Fused Protection, Short-Time Rating    ESO-LV, §2553.18
Grounding 
General Requirements ESO-LV, §2553.20
Substations Grounding ESO-LV, §2553.66
Guarding Live Parts  ESO-LV, §2553.15
Lamps at:
Storage Vaults, Cellulose Nitrate Film  ESO-LV, §2553.51
Tables, Viewing, Cutting & Patching ESO-LV, §2553.1
Motors & Other Equipment in: 
Storage Vaults, Cellulose Nitrate Film  ESO-LV, §2553.52
Over-current Protection, Short-Time Rating    ESO-LV, §2553.18
Portable Arc Lamps ESO-LV, §2553.17
Portable Lamps ESO-LV, §2553.16
Portable Substations ESO-LV, §2553.65
Power cord, Sizing  ESO-LV, §2553.19
Receptacles / Plugging Boxes, Amperage ESO-LV, §2553.14
Rheostats, Enclosing & Guarding Live Parts  ESO-LV, §2553.15
Stage Lighting & Effects Controls, Switches ESO-LV, §2553.13
Substations
Grounding at Substations ESO-LV, §2553.66
Portable Substations ESO-LV, §2553.65
Working Space & Guarding ESO-LV, §2553.64
Switches, Electrical, Stage Lighting & Effects ESO-LV, §2553.13
Switches, Enclosing & Guarding ESO-LV, §2553.15
Wiring, Portable Electrical  ESO-LV, §2553.12
Working Space & Guarding ESO-LV, §2553.64
MOTOR CARRIERS See MOTOR VEHICLES
Brakes, Lights, Operable CSO, §1597(c)  
Brakes, Maintained, Operable CSO, §1597(a)
Farm Labor Vehicles 
Definition GISO, §3700
Fenders, Mud Flaps CSO, §1597(i)
Horns, Warning Devices   
Haulage & Earth Movers CSO, §1592(c)
Back-up Alarms CSO, §1592(a)
Forklifts, Warning Devices   GISO, §3661(c)
Industrial Tractors GISO, §3661
Automotive Trucks GISO, §3706(a)
Back-up Alarms GISO, §3706(b)
Employee Transport Vehicles GISO, §3702(b)
Jobsite Vehicle Requirements, subject to CSO CSO, §1597
Licensing of Drivers GISO, §3701(b)
Lights, Headlights, Taillights, Operable CSO, §1597(b)
Mud Flaps CSO, §1597(i)
Safety Check, Vehicle CSO, §1597(j)
Seatbelts, per GISO GISO, §3702(h)
Seatbelts, Installed, per CSO CSO, §1597(g)
Use of Seatbelts  CSO, §1597(h)
Seats, Adequate number, Secured CSO, §1597(f)
Temporary Covers in Roadways, Secured CSO, §1597(k)
Tools & material, Secured CSO, §1597(e)  
Transport Employees CSO, §1597(f)
Vehicles Safety Check CSO, §1597(j)
Vehicular traffic, Exposure to CSO, §1541(d)
Windshields / Wipers / Defogger / Defroster CSO, §1597(d)
MOTORS, MOTOR CIRCUITS & CONTROLLERS  ESO-LV, Article 56
Automatic Restarting ESO-LV, §2530.43
Controller Design ESO-LV, §2530.82
Disconnecting Means ESO-LV, §2530.74
Grounded Conductors ESO-LV, §2530.105
Motor & Controller, Both ESO-LV, §2530.103 
Motors Served by a Single   ESO-LV, §2530.112
Service Switch as ESO-LV, §2530.106
To Be Indicating ESO-LV, §2530.104
Energy from More Than One Source ESO-LV, §2530.113
Guarding Against Accidental Contact ESO-LV, §2530.121
Grounded Conductors ESO-LV, §2530.105
In Sight from (visible from) Controller Location  ESO-LV, §2530.102
In Sight from, Defined ESO-LV, §2530.4
Motor Controller, General ESO-LV, §2530.81
Controller Design ESO-LV, §2530.82
Horse Power Rating ESO-LV, §2530.83
Motor Not In Sight from (visible from)  Controller  ESO-LV, §2530.86
Motors Served by Single Disconnecting Means ESO-LV, §2530.112
Need Not Open All Conductors  ESO-LV, §2530.84
Overheating Protection ESO-LV, §2530.120
Readily Accessible ESO-LV, §2530.107
Service Switch as Disconnecting Means ESO-LV, §2530.106
MOTOR VEHICLES
Anhydrous Ammonia, 
Mobile Storage Tanks UFPV, §505
Transportation Vehicles & Bulk Delivery Vehicles UFPV, §504
Gages  UFPV, §508
Asbestos exposure, Brake & Clutch Maintenance & Repair  GISO, §5208, Appx F
Shipyard safety orders  SSO, §8358, Appx L
Automobile Undercoating in Garage GISO, §5459
Back-Up Alarms & Warning, Commercial Vehicles   GISO, §3706(b)
Construction Vehicles CSO, §1592(a)
Construction Vehicles CSO, §1592(b)
Brakes, Maintained, Operable CSO, §1597(a)
Brakes Maintenance Work, Asbestos Exposure GISO, §5208, Appx F
Shipyard Standard  SSO, §8358, Appx L
Clutches Maintenance Work, Asbestos Exposure GISO, §5208, Appx F
Shipyard Standard  SSO, §8358, Appx L
Compressed Natural Gas Fuel
Fuel tanks  UFPV, §544
Transportation tanks  UFPV, §535
Construction Vehicles 
Backhoes See EARTHMOVING EQUIPMENT & HAULAGE VEHICLES
Back-Up Alarms & Warning, Commercial Vehicles   GISO, §3706(b)
Construction Vehicles CSO, §1592(a)
Construction Vehicles not subject to §1592(a) CSO, §1592(b)
Brakes, Lights, Operable CSO, §1597(c)  
Brakes, Maintained, Operable CSO, §1597(a)
Crawlers See EARTHMOVING EQUIPMENT & HAULAGE VEHICLES
Fenders, Mud Flaps CSO, §1597(i)
Horns, Warning Devices   
Forklifts, Warning Devices   GISO, §3661(c)
Haulage & Earth Movers CSO, §1592(c)
Back-up Alarms CSO, §1592(a)
Jobsite Vehicle Requirements, subject to CSO CSO, §1597
Use of Seatbelts  CSO, §1597(h)
Licensing of Drivers GISO, §3701(b)
Lights, Headlights, Taillights, Operable CSO, §1597(b)
Loaders See EARTHMOVING EQUIPMENT & HAULAGE VEHICLES
Mud Flaps CSO, §1597(i)
Pile Driving Operations, Unloading Piles CSO, §1601
Safety Check, Vehicle CSO, §1597(j)
Seatbelts, Installed, per CSO CSO, §1597(g)
Use of Seatbelts  CSO, §1597(h)
Seats, Adequate number, Secured CSO, §1597(f)
Temporary Covers in Roadways, Secured CSO, §1597(k)
Tools & material, Secured CSO, §1597(e)  
Transport Employees CSO, §1597(f)
Unloading Piles, Pile Driving Operations  CSO, §1601
Vehicles Safety Check CSO, §1597(j)
Vehicular traffic, Exposure to CSO, §1541(d)
Windshields / Wipers / Defogger / Defroster CSO, §1597(d)
Employees Transport
Construction operations CSO, §1597(f)
Employee Transport Vehicles GISO, §3702(b)
Farm Labor Vehicles 
Definition GISO, §3700
Licensing of Drivers GISO, §3701(b)
Seatbelts Required GISO, §3702(h)
Forklifts, AKA - Industrial Trucks    See INDUSTRIAL TRUCKS
Fueling, Internal Combustion Engines GISO, §3319
Gasoline Dispenser, Hazardous Locations  ESO-LV, §2540.7
No Smoking Signs, at Service Station    GISO, §5580
Fuel tank Requirements, Natural Gas  UFPV, §544
Gantry trucks (Straddle Carriers) GISO, Article 31
Access to  GISO, §3803
Brakes  GISO, §3809
Guarding, Wheel GISO, §3805
Exception to Guarding GISO, §3805(b)
Lights  GISO, §3808
Operating Rules  GISO, §3807
Speed Control GISO, §3806
Governor GISO, §3806(a)
Restricted Walkways GISO, §3806(b)
Speed Zones GISO, §3806(b)
Visibility  GISO, §3802
Warning Devices GISO, §3801
Garage, Automobile Undercoating inside GISO, §5459
Garbage collection vehicles    See GARBAGE TRUCKS
Gasoline, Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
Gasoline stations See SERVICE STATIONS
Generators, Vehicle Mounted, Grounding  ESO-LV, §2395.6
Haulage vehicles See HAULAGE VEHICLES
Horns, Warning Devices   
Haulage & Earth Movers CSO, §1592(c)
Back-up Alarms CSO, §1592(a)
Forklifts, Warning Devices   GISO, §3661(c)
Industrial Tractors GISO, §3661
Automotive Trucks GISO, §3706(a)
Back-up Alarms GISO, §3706(b)
Employee Transport Vehicles GISO, §3702(b)
Industrial tractors See INDUSTRIAL TRACTORS
Industrial trucks See INDUSTRIAL TRUCKS
Lifts, Automotive See AUTOMOTIVE LIFTS
Lights
Employee Transport Vehicles  GISO, §3702(b)
Gantry trucks  GISO, §3808
Haulage & Earth Movers CSO, §1592(g)
Job Site Vehicles CSO, §1597(b)
Liquefied natural gas
Fuel tanks  UFPV, §544
Transportation tanks  UFPV, §535
Loaders See EARTHMOVING EQUIPMENT & HAULAGE VEHICLES 
Vehicle-mounted handling devices  TelSO, §8610 
Marine terminal operations See MARINE TERMINAL OPERATIONS subheading: Vehicles
Natural Gas Fuel tank Requirements  UFPV, §544
Piles, unloading  CSO, §1601
Refrigerator vehicles  GISO, §3251
Refuse collection vehicles    See GARBAGE TRUCKS
Refuse compaction vehicles    See GARBAGE TRUCKS
Seatbelts
Amusement Rides    GISO, §3907(c)
Back-Hoe, Seatbelts  CSO, §1596(a)
Earthmoving Equipment  GISO, §3653
Farm Labor Vehicles GISO, §3702(h)
Forklifts, AKA - Industrial Trucks  GISO, §3653
Use of Required, when Manufacturer Provided GISO, §3650(t)(33)
Haulage Vehicles & Equipment, per CSO CSO, §1591(h)
Haulage Vehicles, per GISO GISO, §3653
Industrial Trucks  GISO, §3653
Jobsite Vehicles CSO, §1597(g)
Use of Seatbelts  CSO, §1597(h) 
Transport of Employees GISO, §3702(h)
Service stations See SERVICE STATIONS
Ship Yard Safety for Motor Vehicles SSO, §8387
Spray coating of Vehicles in Garages  GISO, §5459
Straddle Carriers (Gantry Trucks) GISO, Article 31
Access to  GISO, §3803
Brakes  GISO, §3809
Guarding, Wheel GISO, §3805
Exception to Guarding GISO, §3805(b)
Lights  GISO, §3808
Operating Rules  GISO, §3807
Speed Control GISO, §3806
Governor GISO, §3806(a)
Restricted Walkways GISO, §3806(b)
Speed Zones GISO, §3806(b)
Visibility  GISO, §3802
Warning Devices GISO, §3801
Telecommunication Vehicles and Equipment  TELSO, §8610
Tires, Inflation & Mounting GISO, §3325
Mounting GISO, §3326
Split-Rim Mounting, Safety Practices GISO, §3327
Trash collection vehicles    See GARBAGE TRUCKS
Trash compaction vehicles    See GARBAGE TRUCKS
Undercoating, Automobile Undercoating in Garage GISO, §5459
Unloading Piles  CSO, §1601
Garages in  GISO, §5459
Waste disposal vehicles    See GARBAGE TRUCKS
Waste compaction vehicles    See GARBAGE TRUCKS
Wheeled tractors See HAULAGE VEHICLES 
  ” ”          ”       See also under AGRICULTURAL SAFETY ORDERS
” ”          ”    See TRACTORS 
MOULDERS, Dough, Food Service GISO, §4546
MOULDING MACHINES, Woodworking GISO, §4318
MOUNTING, Abrasive/Grinding Wheel     GISO, §3580
MOUNTING, of Equipment, per ESO ESO-LV, §2340.13
”             ”              ”              ”             ”        ESO-HV, §2710.1
MOVERS, PRIME See PRIME MOVERS
MOVIE, Projectors, Electrical ESO-LV, Article 72
Application / Scope  ESO-LV, §2554.1
Non-professional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Approval Requirement ESO-LV, §2554.20
Projector Component Parts ESO-LV, §2554.32
Booth Requirement, Slow Burning Film ESO-LV, §2554.31
Conductors
Flexible Cord Requirement ESO-LV, §2554.15
Size ESO-LV, §2554.13 
Type for Hot Equipment ESO-LV, §2554.14
Type for Lamps ESO-LV, §2554.14
Electrical Wiring
Conductor Types for Hot Equipment ESO-LV, §2554.14  
Conductor Types for Lamps & Hot  ESO-LV, §2554.14
Flexible Cords ESO-LV, §2554.15
Sizing of Conductors ESO-LV, §2554.13
Equipment, Location of ESO-LV, §2554.10
Prohibited Equipment ESO-LV, §2554.11
Flexible Cord Requirement ESO-LV, §2554.15
Illumination, Source of ESO-LV, §2554.33
Information Labels / Tags ESO-LV, §2554.21
Lamp Guards ESO-LV, §2554.16
Location of Equipment ESO-LV, §2554.10
Marking / Labels ESO-LV, §2554.21
Marking ESO-LV, §2554.34
Nonprofessional Film Marking ESO-LV, §2554.35
Nonprofessional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Prohibited Equipment ESO-LV, §2554.11
Projectors 
Marking, Information ESO-LV, §2554.34
Motor-Driven Projectors ESO-LV, §2554.12
Non-professional Projector, Defined ESO-LV, §2554.30
Professional Projector, Defined  ESO-LV, §2554.2
Projector Component Parts ESO-LV, §2554.32
Slow Burning Film Booth Not Required ESO-LV, §2554.31
Sound Recording & Reproduction Equipment  ESO-LV, §2554.50
MOVIE, Projection Rooms GISO, §3245
MOVIE, Studios & Similar, Electrical ESO-LV, Article 71
Application / Scope  ESO-LV, §2553.1
Boxes, Receptacle ESO-LV, §2553.14 
Circuit Breakers, Over-current Protection, ESO-LV, §2553.18
Controls, Electrical, Stage Lighting & Effects ESO-LV, §2553.13
Current Carrying Parts, Enclosing & Guarding ESO-LV, §2553.15
Electrical Wiring
Sizing of Conductors ESO-LV, §2553.19
Enclosing & Guarding Live Parts  ESO-LV, §2553.15
Film storage vaults
Lamps ESO-LV, §2553.51
Prohibited equipment ESO-LV, §2553.52
Flexible Cord & Cable Requirement ESO-LV, §2553.12
Fused Protection, Short-Time Rating    ESO-LV, §2553.18
Grounding 
General Requirements ESO-LV, §2553.20
Substations Grounding ESO-LV, §2553.66
Guarding Live Parts  ESO-LV, §2553.15
Lamps at:
Storage Vaults, Cellulose Nitrate Film  ESO-LV, §2553.51
Tables, Viewing, Cutting & Patching ESO-LV, §2553.1
Motors & Other Equipment in: 
Storage Vaults, Cellulose Nitrate Film  ESO-LV, §2553.52
Over-current Protection, Short-Time Rating    ESO-LV, §2553.18
Portable Arc Lamps ESO-LV, §2553.17
Portable Lamps ESO-LV, §2553.16
Portable Substations ESO-LV, §2553.65
Power cord, Sizing  ESO-LV, §2553.19
Receptacles / Plugging Boxes, Amperage ESO-LV, §2553.14
Rheostats, Enclosing & Guarding Live Parts  ESO-LV, §2553.15
Stage Lighting & Effects Controls, Switches ESO-LV, §2553.13
Substations
Grounding at Substations ESO-LV, §2553.66
Portable Substations ESO-LV, §2553.65
Working Space & Guarding ESO-LV, §2553.64
Switches, Electrical, Stage Lighting & Effects ESO-LV, §2553.13
Switches, Enclosing & Guarding ESO-LV, §2553.15
Wiring, Portable Electrical  ESO-LV, §2553.12
Working Space & Guarding ESO-LV, §2553.64
MOVIE THEATERS    See THEATERS & SIMILAR LOCATIONS
”        ”         ”         ” See also ASSEMBLY, Halls or Places of
MOVING PARTS, Machinery & Equipment, per GISO GISO, §4002
MOVING PARTS & ARCING PARTS, per ESO ESO-LV, §2390.41
Shielding of Fuses / Circuit Breakers ESO-LV, §2390.41(a)
Guarding suddenly moving parts ESO-LV, §2390.41(b)
Combustible material, Separate from ESO-LV, §2340.18
MOVING WALKS, Electrical Requirements per ESO ESO-LV, Article 74.1
”           ”           ”           ”           ”           ”           ”            ” See also under ELEVATORS
Application / Scope ESO-LV, §2562.1
Controllers, Motor ESO-LV, §2562.7 
Disconnecting Means ESO-LV, §2562.2
Identification, Sign Requirements ESO-LV, §2562.3
Interconnection, Multicar Controllers ESO-LV, §2562.6
Motor Controllers ESO-LV, §2562.7
Sign Requirements ESO-LV, §2562.3 
Single-Car & Multicar Installations ESO-LV, §2562.4
Multiple Driving Machines ESO-LV, §2562.3
Multiple Disconnecting Means ESO-LV, §2562.5
Multicar Controllers ESO-LV, §2562.6
Warning Signs  ESO-LV, §2562.5
MOVING WALKS, per ElevSO
Group II installations, Contract signed before 10/25/1998 ElevSO, Article 14
Access Work Space ElevSO, §3092(c)
Control Devices Operating & Safety Devices ElevSO, §3092(a)
Design Requirements  ElevSO, §3091
Electrical Wiring & Equipment ElevSO, §3092(b)
Operating & Safety Devices ElevSO, §3092(a)
Group III, Installations signed on or after 10/25/1998 but before 5/1/2008 ElevSO, Article 27
Access to ElevSO, §3127.6
Brake ElevSO, §3127.4
Construction Requirements ElevSO, §3127.2
Devices, Operating & Safety ElevSO, §3127.5
Driving Machine, Motor & Brake ElevSO, §3127.4
Electrical Work  ElevSO, §3127.6
Fire Protection, Supports & Machine Space ElevSO, §3127.1
Floor Openings, Protection of  ElevSO, §3127.0
Lighting ElevSO, §3127.6
Motor ElevSO, §3127.4
Operating Devices ElevSO, §3127.5  
Outdoor Moving Walks ElevSO, §3127.7
Rated Speed ElevSO, §3127.3
Safety Devices ElevSO, §3127.5
Group IV, Installation Contract signed after 5/1/2008 
Moving Walks ElevSO, §3141.12
MOWERS, Lawn, Power GISO, §3563
Controls, Momentary Contact Device GISO, §4086
Electrical grounding  ESO-LV, §2395.45
Power Lawn Mowers  GISO, §3563 
MOXIE (METHOXYCHLOR), Airborne Contaminant, Exposure limit GISO, §5155, & Appx A
Listed, Permissible Exposure Limits GISO, §5155, Table AC-1
MSDS, Material safety data sheet, Definition GISO, §5189(c)
Accuracy of Information on GISO, §5189(g)(5)
Development, or Obtain  GISO, §5189(g)(1)
Language Requirement  GISO, §5189(g)(2)
Provide, Requirement to GISO, §5189(g)(6)
MUFFLERS/SPARK ARRESTERS
Explosives, Handling and Use of, Engines equipped w/, not source of Ignition GISO, §5276(a)
Explosives, Mixing Blasting Agents, Engines shall be equipped w/ GISO, §5342(k)
Forklift, Maintenance of GISO, §3663(b)
Industrial Trucks, Maintenance of GISO, §3663(b)
Oil & Gas Well Operations PSO-D&P, §6684(b)
Exception, when engine is shut down PSO-D&P, §6684(a), Exception
Maintenance of PSO-D&P, §6684(c)
MULTI-EMPLOYER WORKSITE REGULATIONS See Cal/OSHA, §336.10
Applicability of Defenses See Cal/OSHA, §336.11
MULTI-STORY BUILDINGS, Structural steel erection  CSO, §1710
Bridging terminus points, illustration CSO, §1710, Appx A
Double connections, illustrations CSO, §1710, Appx B
Site-specific plan,  CSO, §1710, Appx C
MUSHROOM CAPS, Rebar Protective Cover See REINFORCING STEEL
MYCOBACTERIUM TUBERCULOSIS, M. Tuberculosis See also AEROSOL TRANSMISSIBLE DISEASES
Respiratory Protection for GISO, §5147
TB Conversion GISO, §5199(b), (h), 
TB Test GISO, §5199(f)(3)