Heard at the April 13,2000 Public Hearing
Adopted on June 15, 2000
Approved by OAL on July 21, 2000
Effective August 20, 2000
Add new Section 4307.1 to read:
§ 4307.1. Miter Saws.
(a)(1) With the carriage in the full cut position as depicted in Figures
A and B, a guard shall enclose the upper half of the blade and at least
50 percent of the arbor end. EXCEPTION: The guard may have an opening for ejection
of sawdust provided the opening is located beyond the outer circumference of
the blade, or is located in such a manner that a ½ inch diameter probe inserted
2 ½ inches into the opening cannot contact the blade.
(2) The saw power shall be disconnected before cleaning or unjamming the guard
opening designed for the ejection of sawdust. (b) With the carriage in the full
retract (raised) position as depicted in Figures A and B, the periphery of the
lower blade teeth shall be fully guarded and the guard shall extend at least
¾ of an inch radially inward beyond the root of the teeth. EXCEPTIONS:
1. Saws with guards that shield the lower blade and teeth on both sides may
have the necessary opening between the lower blade guards to allow the blade
teeth to make contact with the material being cut.
2. Lower blade guards may also have a side slot up to 1-½ inches in width on
the motor side extending from the motor-shaft to the bottom of the guard, for
motor-shaft clearance.
3. Blade exposure as depicted in Figures A and B is allowed in the lower blade
quadrant furthest away from the operator's side of the saw, provided the blade
exposure does not exceed 45 degrees within the quadrant.
(c) Employers shall instruct employees to keep hands and fingers outside the
area below the blade until the blade has come to a complete stop.