A building where explosives and detonators are stored is called a Magazine.
A magazine construction has to be approved by the Inspector of Explosives and it has to be on a site which also needs his approval. Certain safe distances are specified for the magazine site and they specify the minimum distance of residential quarters, public roads, etc. from the magazine.
These distances depend upon the capacity of the magazine; larger capacity requires longer safe distances. Small magazines in the mine premises are according to licence in Form J.
Such a licence permits the magazine owner to store upto 45 kg of gun powder, 5 kg. of other NG explosives, 200 detonators, 50 kg slurry explosives (nitrate mixture) and any quantity of safety fuse.
The large magazines in the mine premises are according to licence in Form L for storing high explosives upto 25,000 kg and 2,00,000 detonators.
Under the Explosives Rules the following can be stored together in the same magazine:
Gunpowder (class 1), nitrate mixtures (class 2), nitro compounds (class 3), chlorate mixtures (class 4), safety fuse, plastic igniter chord and detonating fuse (all of class 6).
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