Author: | Paul, J. W. |
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Additional Authors: | Tomlinson, H., Craighead, S. J. |
Year: | 1931 |
Document Type: | BMRA |
Issuing Agency: | United States Bureau of Mines, |
SUDOC: | C 22.12:3113 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 3113 |
Subjects: | Coal mines and mining--Pennsylvania--Westmoreland County |
Mine timbering | |
Links: | no.3101-3125 1931 |
https://hdl.handle.net/2027/mdp.39015077567140 |