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Author: Irani, M. C. | Jansky, J. H. | Jeran, P. W. | Hassett, G. L.
Title: Methane Emission From U.S. Coal Mines in 1975, A Survey. A Supplement to Information Circulars 8558 and 8659.
Coporate: Bureau of Mines, Pittsburgh, PA
Report: IC 8733, 1977, 58 p.
Keywords: methane | measurements | coal mines | mine gases