Title
Active list of permissible explosives and blasting devices approved prior to June 30, 1930.
Published
[Washington, D.C.?] : U.S. Dept. of Commerce, Bureau of MInes, 1930.
Physical Description
1 online resource
Access and use
Unrestricted online access.
Variant and related titles
HathiTrust Digital Library.
Added to Catalog
August 26, 2024