Browse TRAIL Inventories

Active list of permissible explosives and blasting devices approved prior to June 30, 1938

Active list of permissible explosives and blasting devices approved prior to June 30, 1939 / U.S. Dept. of the Interior, Bureau of Mines.

Active list of permissible explosives and devices approved previous to June 30, 1943

Active list of permissible explosives and blasting devices approved before February 28, 1961


Published Year

Subject

Author