Permissible mine equipment approved during the calendar years 1947-49
| Main Author: | Brunot, H. B. 1894-1962. |
|---|---|
| Other Authors: | United States. Bureau of Mines. |
| Format: | Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of the Interior, Bureau of Mines,
1950.
|
| Physical Description: |
ii, 16 pages ; 27 cm. |
| Series: |
Information circular (United States. Bureau of Mines) ;
7569. |
| Subjects: |