Search U.S. government technical reports digitized or harvested by TRAIL.
Control of sulfur and ash in mine-run metallurgical coal :report [No.] 1
A study of summer air conditioning with water sprays to prevent roof falls at the Beech Bottom Coal Mine, West Virginia
Reserves, Bed Characteristics, and Coking Properties of the Willow Creek Coal Bed, Kemmerer District, Lincoln County, Wyoming
Exploration, Composition, and Washing, Burning and Gas-Producer Tests of a Coal Occurring Near Coaldale, Esmeralda County, Nevada
Use of scrapers and other light earth-moving equipment in bituminous-coal strip mining
Investigation of Coal Deposits in the Coal Creek District, Gunnison County, Colorado: Progress Report 1
Exploration, Reserves, Bed Characteristics and Strip-Mining Possibilities of a Lignite Deposit Near Toledo, Lewis County, Washington
Investigation of Meta-Anthracite in Newport and Providence Counties, Rhode Island: Petrography, Chemical Characteristics, and Geology of Deposits: I. Investigation of the Field and the Physical and Chemical Characteristics of the Deposits; II. Preliminary Geologic Study of the Portsmouth and Cranston Areas, Rhode Island; III. General Conclusions
Minable Reserves, Petrography, Chemical Characteristics, and Washability Tests of Coal Occurring in the Coos Bay Coal Field, Coos County, Oregon
Mechanical mining in some bituminous-coal mines.
Slope sinking through water-bearing strata at mine 3, Bell & Zoller Coal & Mining Co., Williamson County, Ill.
Investigation of Coal Deposits in the Fairview and Coal City Basins of Coosa Field, St. Clair County, Alabama: Reserves, Petrography, and Chemical Properties of Coals; Washability Characteristics of Coal from Fairview Bew; and Geology of Area
Reserves, Petrographic and Chemical Characteristics, and Carbonizing, Properties of Coal Occurring South of Dry Fork of Minnesota Creek, Gunnison County, Near Paonia, Colorado, and the Geology of the Area
Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area