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Official changes in the active list of permissible explosives and blasting devices for November, 1930

Official changes in the active list of permissible explosives and blasting devices for December, 1930

Official changes in the active list of permissible explosives and blasting devices for February, 1930

Official changes in the active list of permissible explosives and blasting devices for March, 1930

Official changes in the active list of permissible explosives and blasting devices for June, 1930

Active list of permissible explosives and blasting devices approved prior to June 30, 1930.

Official changes in the active list of permissible explosives and blasting devices for September, 1930

Published Year

1930-1939 (7)

Subject

Explosives--Safety regulations--1930 (7) *

Author

Turner, Scott. (6)