The mining environment poses unique challenges to the illuminating engineer. It is unlike most other industrial settings, in that conditions cannot be designed but rather must be accommodate. Specifically, room dimensions and surface reflectance in underground mines are defined by the deposit mined and can only be modified at great expense. A potentially explosive atmosphere, dust, and the ever-changing nature of the underground environment further complicate the illumination task. It is these predetermined, and often adverse, conditions that cause extreme difficulty in providing adequate illumination in mines. The concerns that need to be addressed include adequate illumination for hazard and operational cue recognition, the quality of lighting, and health maintenance.
Ch. 11.9 in Proc. SME Mining Eng. Handbook (Littleton, Colorado, 1992). SME, 2nd Ed, V 1, PP. 1127-38