Barricading as a life-saving measure following mine fires and explosions /
Saved in:
| Language: | English |
|---|---|
| Format: | U.S. Federal Government Document Book E-Resource |
Table of Contents:
- Cover title.
- At head of title: United States Dept. of the Interior; J.A. Krug, secretary. Bureau of Mines, James Boyd, director.
- "Revised December 1946."