(a) At least twice during each working shift, an inspection shall be made of every part of the mine where an employee is working or required to be in the course of his duties.
One such inspection shall be made during the early part of the work shift and another inspection shall be made during the latter part of the workshift.
Such inspections shall be made by a shift boss or other mine official, who must be at least 21 years of age, and able to speak, read, and write English.
(b) The employee who makes the inspection shall watch for unsafe conditions and practices that may cause injury to employees. Immediate hazards such as missed holes, dangerous accumulations of gases, and unguarded chutes shall be corrected without unnecessary delay.
(c) If any dangerous or questionable ground is found in the roof or sides, it shall promptly be made safe by one or more of the following means:
(1) Scaling or blasting down
(4) Erect barriers with warning signs to prevent entrance to the dangerous area.
1. Change without regulatory effect amending subsection (b) and adding Note filed 3-17-2011 pursuant to section 100, title 1, California Code of Regulations (Register 2011, No. 11).