Active list of permissible explosives and blasting devices approved prior to June 30, 1933.
Saved in:
| Online Access: |
Search for the full-text version of this title in HathiTrust |
|---|---|
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington, D.C.] :
United States Bureau of Mines,
1933.
|
| Series: | Report of investigations (United States. Bureau of Mines) ;
3220. |
| Subjects: |
| Item Description: | "July 1933." |
|---|---|
| Physical Description: | 16 pages ; 28 cm. |
| Action Note: | committed to retain |