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Mining Publication: Peak Methane Concentrations During Coal Mining: An Analysis

Original creation date: January 1974

Image of publication Peak Methane Concentrations During Coal Mining: An Analysis

Methane concentration peaks were measured by the Bureau of Mines at coal mine working faces during entry development. The statistical distribution of peaks was found to be normal or log normal depending on how well the methane was being mixed into the ventilation airstream. A normal distribution indicated good mixing, whereas a log-normal distribution indicated that mixing was poor. In addition, the "highest" peaks over selected intervals were found to fit a type I extreme-value distribution, a result similar to that obtained while mining longwall faces.

Authors: FN Kissell, JL Banfield, RW Dalzell, MG Zabetakis

Report of Investigations - January 1974

  • 0.59 MB

NIOSHTIC2 Number: 10000617

Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7885, 1974 Jan; :1-17