skip to content
Search
Search U.S. government technical reports digitized or harvested by
TRAIL
.
Keyword Search
Enter your search term(s):
[advanced search]
1 result returned
Browse TRAIL Inventories
(opens in new tab)
Search results
Active list of permissible explosives and blasting devices approved before December 31, 1957
Refine your search results
Published Year
1950-1959 (1)
Subject
Coal mines and mining--Safety measures (1) *
Explosives (1)
Author
Damon, G. H. (1) *
Hanna, N. E. (1)
