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Primary view of Carbonizing Properties: Pocahontas Number 6, Davy Sewell, and Fire Creek Coals from West Virginia and Upper and Lower Kittanning and Upper and Lower Freeport Coals from Pennsylvania
Davis, J. D.; Reynolds, D. A.; Brewer, R. E.; Wolfson, D. E.; Naugle, B. W. & Birge, G. W.
1950
Primary view of Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples
Lord, N. W.
1913
Primary view of Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
Lord, N. W.
1913
Primary view of Estimate of Known Recoverable Reserves of Coking Coal in Indiana County, Pennsylvania
Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Cooper, H. M.; Abernethy, R. F.; Reynolds, D. A. et al.
December 1950
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