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Method of Working the Pittsburgh Seam: A Plan of Working to Economically and Safely Remove all the Coal

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/32646

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Title: Method of Working the Pittsburgh Seam: A Plan of Working to Economically and Safely Remove all the Coal
Creators: Blower, Joseph W.
Issue Date: 1892
Citation: Ohio Mining Journal, no. 21 (1892), 69-73.
URI: http://hdl.handle.net/1811/32646
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