What do we know about the explosibility of coal dust in mines? / by H.P. Greenwald.
|Main Author:||Greenwald, H. P. b. 1893.|
[Washington, D.C.] : U.S. Dept. of Commerce, Bureau of Mines, 1929.
Coal mines and mining.
7 p. ;
|Locate a Print Version:||
Find in a library
- Full view (original from University of Michigan)