§ 33.12. Storage.

 (a)  Inside the pit or quarry. All dynamite, black powder, fuse, blasting caps or detonators, electric squibs, or other explosives stored inside the pit or quarry shall be kept in Class B magazines.

 (b)  Outside the pit or quarry. All dynamite, black powder, fuse, blasting caps, electric blasting caps or detonators, electric squibs, or other explosives stored outside the pit or quarry shall be kept in Class A magazines constructed, located, and operated in accordance with Chapter 5, Subchapter D (relating to explosives).

 (c)  Abandoned sections of the pit or quarry. Nothing in this Subchapter shall be construed to prohibit the erection of Class A magazines and the storing of explosives in or near worked out or abandoned sections of pits or quarries, if the magazines are constructed, located and operated in accordance with Chapter 5, Subchapter D (relating to explosives).