Browse TRAIL Inventories

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.

Multiple-Shift Mechanical Mining in some Bituminous-Coal Mines: Progress Report 4. Extraction of Pillars with Mechanized Equipment

Analyses of West Virginia Coals

Control of sulfur and ash in mine-run metallurgical coal :report [No.] 1

Analyses of Virginia coals.

A study of summer air conditioning with water sprays to prevent roof falls at the Beech Bottom Coal Mine, West Virginia

Analyses of Pennsylvania Anthracitic Coals

Analyses of Tennessee coals (including Georgia).

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

Investigation of coal deposits for local use in the arctic regions of Alaska and proposed mine development

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

Coals of Chile

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

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

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 (Maps)


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