WAC 296-52-70055
WAC 296-52-70055. Type 5 magazines: Blasting agent storage facilities
A Type 5 storage facility must:
(1) Be a building, an igloo, an army-type structure, a tunnel, a dugout, a box, or a trailer, semi-trailer, or other mobile facility;
(2) Be weather resistant and theft resistant;
(3) Have the ground around the facility slope away for drainage;
(4) Have the wheels removed or be effectively immobilized by kingpin locking devices or other methods approved by the department, when the unattended vehicular magazine is used.