302602. Storage of flammable materials; smoking restricted; fire doors. (a) Surface storage of oils, grease and other flammable materials shall be in a storage area located at a safe distance from the powder magazine. Flammable materials shall be removed from the storage area for use only in quantities necessary to meet the requirements of a day. Structures in the storage area shall be of fireresistive material and well ventilated. Tight metal receptacles shall be provided for oily waste. (b) Smoking in or about surface structures shall be restricted to places where it will not cause fire or an explosion. (c) Unless existing structures located within one hundred (100) feet of any mine opening are of reasonably fireproof construction, fire shall be erected at effective points in mine openings to prevent smoke or fire from outside sources endangering men working underground. These doors shall be tested at least monthly and kept in effective operation. 302603. Flammable liquids; flame safety and electric lamps. (a) Naphtha or other flammable liquids in lamp houses shall be kept in approved containers or other safe dispensers approved by the inspector. (b) Flame safety lamps shall be permissible and maintained in permissible condition. All flame safety lamps shall be checked by the persons using them and by a qualified lamp attendant, or by a mine examiner, immediately before entering the mine. (c) When not in service, safety lamps and electric lamps shall be under the charge of a responsible company employee. 302604. Requirements as to surface magazines; storage of explosives; explosionproof illumination; use of nonmetallic tools. (a) Separate surface magazines shall be provided for the storage of explosives and detonators. (b) Surface magazines for storing and distributing high explosives be:
302602. Storage of flammable materials; smoking restricted; fire doors. (a) Surface storage of oils, grease and other flammable materials shall be in a storage area located at a safe distance from the powder magazine. Flammable materials shall be removed from the storage area for use only in quantities necessary to meet the requirements of a day. Structures in the storage area shall be of fireresistive material and well ventilated. Tight metal receptacles shall be provided for oily waste. (b) Smoking in or about surface structures shall be restricted to places where it will not cause fire or an explosion. (c) Unless existing structures located within one hundred (100) feet of any mine opening are of reasonably fireproof construction, fire shall be erected at effective points in mine openings to prevent smoke or fire from outside sources endangering men working underground. These doors shall be tested at least monthly and kept in effective operation. 302603. Flammable liquids; flame safety and electric lamps. (a) Naphtha or other flammable liquids in lamp houses shall be kept in approved containers or other safe dispensers approved by the inspector. (b) Flame safety lamps shall be permissible and maintained in permissible condition. All flame safety lamps shall be checked by the persons using them and by a qualified lamp attendant, or by a mine examiner, immediately before entering the mine. (c) When not in service, safety lamps and electric lamps shall be under the charge of a responsible company employee. 302604. Requirements as to surface magazines; storage of explosives; explosionproof illumination; use of nonmetallic tools. (a) Separate surface magazines shall be provided for the storage of explosives and detonators. (b) Surface magazines for storing and distributing high explosives be: