Mining Publication: The Direct Method of Determining Methane Content of Coalbeds for Ventilation Design
The applicability of the "direct method" for determining the methane content of virgin coalbeds was tested. Preliminary results indicate that the direct method, when applied to exploration cores, can be successfully used to estimate coalbed gas content and also approximately predict the total gas emission from a prospective mine located in the coalbed at the exploration site.
Report of InvestigationsJanuary - 1973
NIOSHTIC2 Number: 10000734
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, NTIS No. PB-221628, RI 7767, 1973 Jan; :1-17