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Methods for Sampling Noncombustible Content of Coal Mine Dust.
NTIS: PB 244 776 :15 pages
Under contract with the federal Bureau of Mines, Bituminous Coal Research, Inc., performed a statistical study to find less expensive and time-consuming methods of monitoring the noncombustible content of coal mine dust. Calculations based on thermodynamic considerations verified the reasonableness of federal rock-dusting requirements. The results of extensive sampling in southwestern Pennsylvania mines indicated that, at the 95-percent confidence level, the present system of sampling at the 200-foot intervals may be replaced by sampling at 500-foot intervals, and that a 1-inch scoop floor sampler may replace the standard 6-inch scoop for floor sampling. Further field testing is recommended.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 244 776
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division