Three coal mine gob degasification studies using surface foreholes and a bleeder system [electronic resource] / by S.D. Maksimovic and Fred N. Kissell.
Imprint
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1980]
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/ri8459.pdf; current access available via PURL.
Note
Title from title screen (viewed on July 28, 2008).
