01279nam 2200325Ka 450 991069640810332120080403142732.0(CKB)5470000002378765(OCoLC)218471978(EXLCZ)99547000000237876520080403d1997 ua 0engtxtrdacontentcrdamediacrrdacarrierUse of seismic tomography to identify geologic hazards in underground mines[electronic resource][Spokane, WA] :U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health,[1997]2 unnumbered pages digital, PDF fileTechnology news ;no. 466Title from title screen (viewed on Mar. 10, 2008)."November 1997."Seismic tomographyUnited StatesSeismic tomographySpokane Research Laboratory (National Institute for Occupational Safety and Health)GPOGPOBOOK9910696408103321Use of seismic tomography to identify geologic hazards in underground mines3163118UNINA