PDFWAC 296-52-70065
Explosives day box.
(1) A day box for explosives must:
(a) Be fire, weather, and theft resistant;
(b) Be used in a manner that safely separates detonators from other explosives;
(c) Be constructed of a minimum of number 12 gauge (.1046 inches) steel;
(d) Be lined with at least either 1/2-inch plywood or 1/2-inch masonite-type hardboard;
(e) Have doors that overlap the sides by a minimum of one inch;
(f) Have appropriate ground slope for drainage.
(2) Hinges and hasps must be attached by:
(a) Welding;
(b) Riveting; or
(c) Bolting nuts on the inside of the door.
(3) One steel padlock, which does not need to be protected by a steel hood, having a minimum of five tumblers and a case hardened shackle of a minimum of 3/8-inch diameter is sufficient for locking purposes.