Search U.S. government technical reports digitized or harvested by TRAIL.
Mining methods used in the Grundy coal field of Buchanan County, Va.
Longwall mining methods in some mines of the Middle Western states
Some aspects of strip mining of bituminous coal in Central and South Central states
Truck vs. rail haulage in bituminous-coal strip mines
Multiple-shift mechanical mining in some bituminous coal mines.
Reclamation of stripped coal land
Multiple-shift mechanical mining in some bituminous coal mines.
Underground transportation of coal :Progress report 1
Underground transportation of coal :progress report [No.] 2
An analysis of the use of electricity at coal mines.
Analyses of West Virginia Coals
Control of sulfur and ash in mine-run metallurgical coal :report [No.] 1
Analyses of Pennsylvania Anthracitic Coals
Analyses of Tennessee coals (including Georgia).
Use of scrapers and other light earth-moving equipment in bituminous-coal strip mining
Mechanical mining in some bituminous-coal mines.
Coal-mining methods and practices in western Arkansas :preliminary investigation
Investigation of coal deposits in south central Alaska and the Kenai Peninsula
Estimate of Known Recoverable Reserves of Coking Coal in Indiana County, Pennsylvania
Estimate of Known Recoverable Reserves of Coking Coal in Cambria County, Pennsylvania
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
Castleman Basin, Garrett County, Maryland
Bituminous-Coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field, Alaska
Estimate of Known Recoverable Reserves of Coking Coal in Raleigh County, West Virginia
Estimate of Known Recoverable Reserves of Coking Coal in Jefferson County, Pennsylvania
Estimate of Known Recoverable Reserves of Coking Coal in Knott County, Kentucky
Coal Deposits in the Deep River Field, Chatham, Lee, and Moore Counties, N.C.