Anthracite mechanical mining investigations. Progress report 9, Measurement of loads borne by underground-roadway supports / by Andrew Allan, Jr., Paul H. Kaar, and John D. Cooner, Sr.
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Other title: | Measurement of loads borne by underground-roadway supports. |
Format: | Government Document Book |
Language: | English |
Published: |
[Pittsburgh, Pa.] :
U.S. Dept. of the Interior, Bureau of Mines,
1953.
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Series: | Report of investigations (United States. Bureau of Mines) ;
4946. |
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