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Estimate of Known Recoverable Reserves of Coking Coal in Armstrong County, Pennsylvania.

Description: Report issued by the U.S. Bureau of Mines on the estimates of known reserves of coking coal deposits in Armstrong County, Pennsylvania. The properties of coal and coal blends from the area are presented. The report includes tables and maps.
Date: July 1951
Creator: Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Abernethy, R. F. & Reynolds, D. A.
Partner: UNT Libraries Government Documents Department

Method and Cost of Mining the Thick Freeport Coal in a Second Western Pennsylvania Mine

Description: From introduction: The purpose of this paper is to present a detailed description of the methods employed and the equipment used, with the results obtained in the operation of this mine in the thick Freeport bed on the northern end of the field, near the Alleghegny-Butler county line in western Pennsylvania. It may be classed as a captive mine, as the largest portion of the product is consumed at the by-product plants of the parent company
Date: July 1929
Creator: Paul, James Washington & Tomlinson, H.
Partner: UNT Libraries Government Documents Department