Recovery percentage of bituminous coal deposits in the United States (in two parts) Part 1, Underground mines /
Saved in:
Main Author: | Lowrie, Raymond L. |
---|---|
Other Authors: | United States. Bureau of Mines. |
Format: | Book |
Language: | English |
Published: |
[Washington, D.C.] :
U.S. Dept. of the Interior, Bureau of Mines,
[1968]
|
Physical Description: |
19 pages : illustrations ; 27 cm. |
Series: |
Report of investigations (United States. Bureau of Mines) ;
7109. |
Subjects: |
In Prospector
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