Rotary drilling holes in coalbeds for degasification /
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Author / Creator: | Cervik, Joseph. |
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Imprint: | [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975] |
Description: | 21 pages : digital, PDF file. |
Language: | English |
Series: | Report of investigations ; 8097 Report of investigations (United States. Bureau of Mines) ; 8097. |
Subject: | |
Format: | E-Resource U.S. Federal Government Document Book |
URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/7258691 |
Other authors / contributors: | Fields, H. H. Aul, George N. United States. Bureau of Mines. |
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Notes: | Title from title screen (viewed on July 28, 2008). Mode of access: Internet at the National Institute for Occupational Safety and Health web site. Address as of 7/28/08: http://www.cdc.gov/niosh/mining/pubs/pdfs/ri8097.pdf; current access available via PURL. |
Other form: | Cervik, Joseph. Rotary drilling holes in coalbeds for degasification 21 p. |
GPO item no.: | 0499-F-22 (online) |
Govt.docs classification: | HE 20.7131:8097 |
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