Cover Image

Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey.

A report published jointly by the U.S. Bureau of Mines and U.S. Geological Survey.

Bibliographic Details
Corporate Authors: United States. Bureau of Mines, Geological Survey (U.S.)
Format: Government Document Book
Language:English
Series:Geological Survey bulletin ; 1450-B.
Subjects:
Coal > Classification.
Description
Summary: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.
Item Description:Mineral resource classification systems of the U.S. Bureau of Mines and U.S. Geological Survey.
Physical Description:v, 7 pages : illustrations ; 23 cm.