Geomechanics of reinforced cemented backfill in an underhand stope at the Lucky Friday Mine, Mullan, Idaho / T.J. Williams ... [and others].
Pittsburgh, PA : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 
Title from title screen (viewed on July 11, 2008). and "July 2001."
Mode of access: Internet at the National Institute for Occupational Safety and Health web site. Address as of 7/11/08: http://www.cdc.gov/niosh/mining/pubs/pdfs/2001-138.pdf; current access available via PURL.