Subsection 4: Signage and lighting.

Shaft and gallery openings with an incline of more than 45° are suitably marked at night.

Openings or differences in level in the floor of a gallery, narrow passages, lowered vaults and any obstacles which may present a danger or hindrance to the movement of workers, vehicles or convoys are suitably indicated by appropriate means, such as position lights or reflective devices of equivalent effectiveness. In the absence of sufficient lighting, warning devices are provided, such as dangling chains and wires, flexible brushes, the contact of…

In the absence of sufficient lighting in galleries where vehicles or convoys are in use, workstations are indicated by highly visible lights and vehicles or convoys are fitted with: 1° A white light at the front; 2° A red light at the rear, or a reflective device of the same colour or of equivalent effectiveness.

Except in galleries with sufficient fixed lighting, vehicles are fitted with a headlamp capable of illuminating a distance at least equal to the stopping distance of the vehicle or convoy.

Where underground sites are lit electrically, workers are provided with emergency lighting to be used in the event of a power cut for the time required to evacuate the site.