34 Pa. Code § 39.32 – Explosives.

(a) Caps. Blasting caps and electric blasting caps are copper shells which protect and contain a very sensitive explosive which will explode from shock, heat, or by friction or by spark. The explosive contained in caps should not be touched, picked or disturbed in any manner. No caps or other explosives should be carried in pockets, nor should they be left in a place where children or others may meddle with them.
(b) Storage. The storage of explosives should conform to the following:
1. (1) Explosives should not be stored, used, or handled in or near any place of residence.
2. (2) No vehicle containing explosives should be left unattended, unless the brake is set, the engine is stopped, and the vehicle is left in gear.
3. (3) A competent person should always be in charge of explosives and magazines in which explosives are stored. Such person should keep the magazine key and should be responsible for seeing that all proper safety precautions are taken.
4. (4) If artificial lighting is required, only an electric flashlight or electric lantern should be used. Oil-burning or chemical lamps, lanterns, candles, or matches should not be used.
5. (5) The ground around magazines should be kept clear of leaves, grass, trash, stumps, or other debris, in order to minimize the likelihood of fire reaching the explosives.
6. (6) Explosives should not be stored in any dwelling, blacksmith shop, barn, or any other place where loss of life or property damage might occur, in the event of an accident.
(c) Operating rules. Only wooden tamping sticks should be used to tamp explosives. A wooden wedge and soft metal mallet should be used to open explosives. Magazine rules should be conspicuously posted in each installation.