§ 33.148. Illumination.
(a) Stationary lights shall be provided during working hours of all shaft stations whenever these stations are in actual use.
(b) In all places where hoists, pumps or other machinery is in operation near persons in the mine the moving parts of this machinery shall be so lighted that they may be readily distinguished.
(c) If practical, electric lights shall be used for all stationary lighting in the mine. Electric lights shall be kept at a safe distance from flammable materials.
(d) No open flame light shall be left burning unattended on or near flammable materials.
(e) No gasoline, oil or liquefied petroleum gases shall be taken underground for purposes of illumination.
(f) Each employe working underground shall be provided with a portable light designed to aid him in reaching a place of safety in the event of a failure in the mine lighting system.
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