01496oam 2200433 a 450 991069676300332120130430081048.0(CKB)5470000002381240(OCoLC)233638736(EXLCZ)99547000000238124020080710d1985 ua 0engtxtrdacontentcrdamediacrrdacarrierOverlap probability for short-period-delay detonators used in underground coal mining[electronic resource] /by T.S. Bajpayee, Richard J. Mainiero, and J. Edmund HayPittsburgh, Pa. :U.S. Dept. of the Interior, Bureau of Mines,[1985]1 online resource (18 pages) illustrationsBureau of Mines report of investigations ;8888Title from title screen (viewed on July 9, 2008)."1985."Electric detonatorsBlastingCoal mines and miningElectric detonators.Blasting.Coal mines and mining.Bajpayee T. S1411976Mainiero Richard J1411977Hay J. Edmund1411978United States.Bureau of Mines.GPOGPOOCLCQGPOBOOK9910696763003321Overlap probability for short-period-delay detonators used in underground coal mining3504331UNINA