Modified longwall mining with a German coal planer progress report 2. Completion of mining in three adjacent panels in the Pocahontas no. 4 bed, Helen, W. Va. /
| Main Author: | Haley, Wilbur A. |
|---|---|
| Other Authors: | Quenon, H. A. |
| Format: | Book |
| Language: | English |
| Published: |
[Washington, D.C.] :
U.S. Dept. of the Interior, Bureau of Mines,
1954.
|
| Physical Description: |
13 pages : illustrations ; 27 cm. |
| Series: |
Report of investigations (United States. Bureau of Mines) ;
5062. |
| Subjects: |
| Item Description: |
"June 1954." "Int. - Bu. of Mines, Pgh., Pa. 6089"--Page 13. Progress report no. 1 considered as being Report of investigations no. 4922, Modified longwall mining with a German coal planer (plow)--in the Pocahontas no. 4 coal bed, Helen, W. Va. Includes bibliographical references. |
|---|---|
| Physical Description: |
13 pages : illustrations ; 27 cm. |
| Bibliography: |
Includes bibliographical references. |