Some factors affecting losses of coal in mining

Author: Rice, George S.
Year: 1921
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:2237
Series: Report of investigations / United States. Bureau of Mines ;
Report Number: 2237
Subjects: Coal mines and mining
Coal mines and mining--United States
Bituminous coal mines and mining
Anthracite coal mines and mining
Link: https://hdl.handle.net/2027/mdp.39015086555300

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