Use of vertical boreholes for assisting ventilation of longwall gob areas
Main Author: | Elder, C. H. |
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Other Authors: | United States. Bureau of Mines., United States. Bureau of Mines. Methane Control Program. |
Format: | Book |
Language: | English |
Published: |
[Washington] :
U.S. Dept. of the Interior,
1969.
|
Physical Description: |
6 pages : illustrations ; 27 cm. |
Series: |
Bureau of Mines technical progress report ;
TRP 13. |
Subjects: |
CMU Storage Gov Pub
Location | Call Number: | Status |
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CMU Storage Gov Pub | I 28.26/6:13 | Available |