Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania /
| Main Author: | |
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| Other Authors: | , |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of the Interior, Bureau of Mines,
1992
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| Series: | Information circular (United States. Bureau of Mines) ;
9331 |
| Subjects: |
Internet
This item is not available through BorrowDirect. Please contact your institution’s interlibrary loan office for further assistance.Duke University
| Call Number: |
I 28.27:9331 |
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