Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania /
| Main Author: | |
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| Corporate Author: | |
| Other Authors: | , |
| Format: | Government Document Microform Book |
| Language: | English |
| Published: |
Washington, D.C. :
Bureau of Mines, U.S. Dept. of the Interior,
1992.
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| Series: | Report of investigations (United States. Bureau of Mines) ;
9403. |
| Subjects: |
| Item Description: | Distributed to depository libraries in microfiche. Shipping list number: 92-2129-M. Microform. |
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| Physical Description: | 1 volume |
| Bibliography: | Includes bibliographical references (page 13). |