Mining Publication: Methane Migration Characteristics of the Pocahontas No. 3 Coalbed
Original creation date: January 1972
Methane-flow and pressure data taken from a mine in the Pocahontas No. 3 Coalbed are compared with flow rates from lump coal obtained in laboratory experiments. From this, it is concluded that the main source of gas is the intact coalbed rather than a "crushed zone" near the working face. The permeability and sorption capacity of the intact coalbed are calculated and gas emission rates are theoretically accounted for.
Report of InvestigationsJanuary - 1972
NIOSHTIC2 Number: 10000607
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7649, 1972 Jan; :1-19