How to prevent death and injury from falls of roof in coal mines

Author: Paul, J. W.
Year: 1932
Document Type: MAIN
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6570
Series: Information circular / United States Department of Commerce, Bureau of Mines ;
Report Number: 6570
Subjects: Coal mine accidents
Coal mines and mining
Link: https://hdl.handle.net/2027/mdp.39015095085554

< New search