MSHA - Code of Federal Regulations - 30 CFR 57.6202
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MSHA - Title 30 CFR
30 CFR § 57.6202
(a) Vehicles containing explosive material shall be--
(1) Maintained in good condition and shall comply with the requirements of subpart M of this part;
(2) Equipped with sides and enclosures higher than the explosive material being transported or have the explosive material secured to a nonconductive pallet;
(3) Equipped with a cargo space that shall contain the explosive material (passenger areas shall not be considered cargo space);
(4) Equipped with at least two multipurpose dry-chemical fire extinguishers or one such extinguisher and an automatic fire suppression system;
(5) Posted with warning signs that indicate the contents and are visible from each approach;
(6) Occupied only by persons necessary for handling the explosive material; (7) Attended or the cargo compartment locked, except when parked at the blast site and loading is in progress; and
(8) Secured while parked by having--
(i) The brakes set;
(ii) The wheels chocked if movement could occur; and
(iii) The engine shut off unless powering a device being used in the loading operation.
(b) Vehicles containing explosives shall have--
(1) No sparking material exposed in the cargo space; and
(2) Only properly secured nonsparking equipment in the cargo space with the explosives.
(c) Vehicles used for dispensing bulk explosive material shall--
(1) Have no zinc or copper exposed in the cargo space; and
(2) Provide any enclosed screw-type conveyors with protection against internal pressure and frictional heat.