New Jersey Statutes Title 34. Labor and Workmen's Compensation 34 § 6-98.8

a. When explosives are used in a mine or quarry, the manner of storing, keeping, handling, moving, charging and firing, or in any manner using such explosives, shall be in accordance with the requirements of the “Explosives Act,” P.L.1960, c. 55 (C.21:1A-128 et seq.), as amended or supplemented, and the rules and regulations now in effect or hereafter issued thereunder, except for the following limitations:

b. All explosives in excess of the amount required for the work of 1-day underground operations may be stored underground in a safely located secondary storage magazine. The maximum amount of explosives to be stored in such magazine shall not exceed the requirements for a 48 hours' supply.

c. The commissioner may regulate and limit the amount of explosives stored in a primary magazine in any underground portion of a mine with due regard for the safety of miners.

d. Any temporary supply for the work of a shift shall be kept in such a place that its accidental discharge will not endanger the miners.