Pennsylvania Statutes Title 52 P.S. Mines and Mining § 70-612. Requirements as to explosives one hundred twenty-five pounds or less; underground transportation

Explosives in amounts of one hundred twenty-five pounds or less or five thousand detonators or less shall be stored in accordance with preceding standards or separate locked box type magazines may be used as distributing magazines when quantities do not exceed those mentioned. Wooden box type magazines shall be constructed strongly of two inch hardwood or the equivalent. No magazine shall be placed in a building containing oil, grease, gasoline, wastepaper, or other highly flammable material, nor shall a magazine be placed less than twenty feet from a stove, furnace, open fire, or flame.