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

1976 ◽  
Keyword(s):  
Mineral Resource ◽  
Classification System ◽  
Geological Survey ◽  
Resource Classification ◽  
The U.S

scholarly journals Coal resource classification system of the U.S. Geological Survey

Circular ◽  
1983 ◽  
Author(s):  
Gordon H. Wood ◽  
Thomas M. Kehn ◽  
M. Devereux Carter ◽  
William C. Culbertson
Keyword(s):  
Classification System ◽  
Geological Survey ◽  
Resource Classification ◽  
Coal Resource ◽  
The U.S
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