Browse TRAIL Inventories

Coal-mining methods and practices and electric power requirements in the Bull Mountain coal field, Montana

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

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

Miller Gulch and Cook & White coal beds near Cerrillos, Santa Fe County, N. Mex. :Reserves ; coking, petrographic, and chemical properties

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

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

Estimate of Known Recoverable Reserves of Coking Coal in Pike County, Kentucky

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

Estimate of Known Recoverable Reserves of Coking Coal in Floyd County, Kentucky

Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va.

Castleman Basin, Garrett County, Maryland

Coal Deposits in the Deep River Field, Chatham, Lee, and Moore Counties, N.C.

Coal Deposit, Coal Creek District, Gunnison County Colorado: Reserves, Coking Properties, and Petrographic and Chemical Characteristics


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