Geologic factors causing roof instability and methane emission problems the Lower Kittaning coalbed, Cambria County, Pa. /
| Main Author: | McCulloch, C. M. |
|---|---|
| Other Authors: | Deul, Maurice., United States. Bureau of Mines. |
| Format: | Electronic |
| Language: | English |
| Published: |
[Washington, D.C.?] :
U.S. Dept. of the Interior, Bureau of Mines,
[1973]
|
| Physical Description: |
ii, 25 pages : digital, PDF file. |
| Series: |
Report of investigations (United States. Bureau of Mines) ;
7769. |
| Subjects: | |
| Online Access: |
https://purl.fdlp.gov/GPO/LPS97410 |
| Item Description: |
Mode of access: Internet at the National Institute for Occupational Safety and Health web site. Address as of 7/18/08: http://www.cdc.gov/niosh/mining/pubs/pdfs/ri7769.pdf; current access available via PURL. Title from title screen (viewed on July 18, 2008). GPO Cataloging Record Distribution Program (CRDP). |
|---|---|
| Physical Description: |
ii, 25 pages : digital, PDF file. |
| Format: |
Mode of access: Internet at the National Institute for Occupational Safety and Health web site. Address as of 7/18/08: http://www.cdc.gov/niosh/mining/pubs/pdfs/ri7769.pdf; current access available via PURL. |