000			00468pam a2200145a 44500
082			_aUSBM _bRI-7782
100			_aGrumer,J
245	1		_aMINIMUM EXTINGUISHANT AND MAXIMUM OXYGEN CONCENTRATIONS FOR EXTINGUISHING COAL DUST-AIR EXPLOSIONS.
260			_a _bU. S. Dept. Of The Interior, Bureau Of Mines, [S. L.] _c1973
300			_a6
500			_aBound With Usbm Ri-7771-81, 7783-90 Lack No. 7775.
700			_aMiller,L F
964			_gCIRC
997			_aTR11103 C
999			_c395753 _d395753