30 CFR § 57.6130 Explosive material storage facilities.
(a) Detonators and explosives shall be stored in magazines.
(b) Packaged blasting agents shall be stored in a magazine or other facility
which is ventilated to prevent dampness and excessive heating,
weather-resistant, and locked or attended. Drop trailers that are currently
licensed by the Federal, State, or local authorities for over-the-road use do
not have to be ventilated. Facilities other than magazines used to store
blasting agents shall contain only blasting agents.
(c) Bulk blasting agents shall be stored in weather-resistant bins or tanks
which are locked, attended, or otherwise inaccessible to unauthorized entry.
(d) Facilities, bins or tanks shall be posted with the appropriate United
States Department of Transportation placards or other appropriate warning
signs that indicate the contents and are visible from each approach.