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.
Control of sulfur and ash in mine-run metallurgical coal :report [No.] 1
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
Castleman Basin, Garrett County, Maryland
Coal Deposits in the Deep River Field, Chatham, Lee, and Moore Counties, N.C.