Active list of permissible explosives and blasting devices approved before Jan. 1, 1965 / by N.E. Hanna and P.A. Richardson.

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Main Author: Hanna, N. E. (Norman E.)
Corporate Author: United States. Bureau of Mines
Other Authors: Richardson, P. A.
Format: Government Document Book
Language:English
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1965.
Series:Information circular (United States. Bureau of Mines) ; 8249.
Subjects: