Effects of Ancient Stream Channel Deposits on Mine Roof Stability: A Case Study (open access)

Effects of Ancient Stream Channel Deposits on Mine Roof Stability: A Case Study

Report issued by the Bureau of Mines over studies conducted on mine roof stability. Mining methods to improve roof stability are discussed. This report includes tables, maps, illustrations, and photographs.
Date: 1987
Creator: Ingram, David K. & Chase, Frank E.
System: The UNT Digital Library
Estimate of Known Recoverable Reserves of Coking Coal in Allegheny County, Pennsylvania (open access)

Estimate of Known Recoverable Reserves of Coking Coal in Allegheny County, Pennsylvania

Report issued by the Bureau of Mines over studies on the reserves of coking coal from Allegheny County, Pennsylvania. The results of the investigations and the different coal beds sampled are presented. This report includes tables, and maps.
Date: September 1953
Creator: Wallace, Joseph J.; Dowd, James J.; Provost, John M.; Abernethy, R. F. & Reynolds, D. A.
System: The UNT Digital Library
Synthetic Liquid Fuels: Annual Report of the Secretary of the Interior for 1951; Part 1 - Oil from Coal (open access)

Synthetic Liquid Fuels: Annual Report of the Secretary of the Interior for 1951; Part 1 - Oil from Coal

Report issued by the Bureau of Mines over an annual study of synthetic liquid fuel production. Results of the annual study are presented and discussed. This report includes maps, tables, illustrations, and photographs.
Date: July 1952
Creator: unknown
System: The UNT Digital Library