Feasibility study and supplement : demonstration mine, using longwall mining techniques, Windber, Somerset County, Pennsylvania
Pittsburgh Allison L. Bayles & Associates
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“Feasibility study and supplement : demonstration mine, using longwall mining techniques, Windber, Somerset County, Pennsylvania” by Pittsburgh Allison L…
Catalogue details
- Author
- Pittsburgh Allison L. Bayles & Associates
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust