Long-term effectiveness of deep mine sealing at Moraine State Park, Butler County, Pa. /
| Main Author: | |
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| Other Authors: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Pgh. [i.e. Pittsburgh], PA : #b U.S. Dept. of the Interior, Bureau of Mines, #c 1983.
[publisher not identified] ;
[date of publication not identified]
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| Series: | Report of investigations (United States. Bureau of Mines) ;
8767. |
| Subjects: |