WAC 296-52-70045
Type 4 magazines: Blasting agent, low
explosive, or nonmass detonating detonator storage facilities. A Type 4 storage facility must:
• Be a building, an igloo, an army-type structure, a
tunnel, a dugout, a box, a trailer, semi-trailer, or other
mobile facility
• Be fire resistant, weather resistant, and theft
resistant
• Have the ground around the facility slope away for
drainage
• Have the wheels removed or effectively immobilized by
kingpin locking devices or other methods approved by the
department, when an unattended vehicular magazine is used.
Note:
Test results show that electric detonators are not affected by sympathetic detonation. Therefore, a Type 4 storage
facility meets the necessary requirements for storage of electric detonators.