(a) On the surface, no unburied flammable or combustible liquids or
flammable gases shall be stored within 100 feet of the following:
(1) Mine openings or structures attached to mine
(2) Fan installations for underground ventilation.
(3) Hoist houses.
(b) Under this standard, the following may be present in the hoist
house in quantities necessary for the day-to-day maintenance of the hoist
(1) Flammable liquids in safety cans or in other
containers placed in tightly closed cabinets. The safety cans and cabinets
shall be kept away from any heat source, and each cabinet shall be labeled
(2) Combustible liquids in closed containers. The
cointainers shall be kept away from any heat source and the hoist operator's