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Use of surface joint and photolinear data for predicting subsurface coal cleat orientation
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1976]
- Phys. Desc.:
- 1 online resource (13 pages)
- Electronic resource
- Click for online content.
E-book
Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
- Publisher:
- [Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1977]
- Phys. Desc.:
- ii, 35 pages : digital, PDF file
- Electronic resource
- Click for online content.
