Active list of permissible explosives and blasting devices approved before December 31, 1951
By: by N.E. Hanna and G.H. Damon.
Contributors: Damon, G.H.; United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7640
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1952
Place of publication: Washington, DC
Language: eng
Number of pages: 12
Notes: Bibliogr.

1