Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey
Contributors: United States. Bureau of Mines.; Geological Survey (U.S.)
Series: Geological Survey bulletin ; 1450-B
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1976
Place of publication: Washington
Language: eng
Subjects: Coal -- Classification.
Genres: Classification.
Description: A report published jointly by the U.S. Bureau of Mines and U.S. Geological Survey

Definitions of coal resource classification terms used by the U.S. Bureau of Mines and U.S. Geological Survey
Notes: Mineral resource classification systems of the U.S. Bureau of Mines and U.S. Geological Survey