N.J. Stat. § 21:1A-136

All explosives, except those in the process of manufacture or being transported or used as permitted by this act, shall be stored in a magazine complying with the requirements of this act. A. All magazines shall be in charge of a competent person who shall be at least 21 years of age. The holder of the storage permit shall be held responsible for compliance with all safety precautions. B. All magazines shall be well ventilated, clean, dry and free of grit, paper, rubbish and any combustible material other than explosives or the cases containing them. C. All magazines shall be kept closed and locked except when necessarily opened for the lawful purpose of storing or removing explosives, for inspections, or by persons lawfully entitled to enter same. D. No container of explosives shall at any time be opened in or within 50 feet of any magazine, nor shall any explosives be kept in any magazine except in closed containers. E. The commissioner is hereby authorized to deny a permit for a magazine which in his judgment is unsuited for the storage of explosives. The commissioner may require plans for magazines to be submitted for approval before the magazines are constructed and used. F. Magazines shall not be provided with artificial heat or internal lighting except by approved portable electric safety battery lamps. Underground magazines may be provided with explosion proof lights where all wiring is in conduits and the switch is located outside of the magazine. G. All magazines in which explosives are stored, except those in explosives manufacturing establishments, shall conform with the Tables of Distance for storage of explosives established by regulations promulgated under this act. H. The commissioner shall state on each storage permit the maximum amount of explosives that may be stored under that permit. No quantity of explosives in excess of that amount shall be stored under the permit. In any event no quantity in excess of 300,000 pounds of commercial explosives and no quantity in excess of 20,000,000 blasting caps shall be kept or stored in any magazine. I. Nitro-carbo-nitrates or propellants, or both, may be stored with commercial explosives in the same magazine, but when so stored, all commercial explosives magazine regulations apply, and the quantity of nitro-carbo-nitrate or propellant shall be taken into consideration in computing the total quantity in the magazine for compliance with the quantity and distance tables for commercial explosives established by regulation. L.1960, c. 55, p. 479, s. 9.