Some years ago preliminary work was undertaken to develop a device by means of which the methane pressure in a coal seam could be measured. During the past year this work was again taken up and developed to a stage where actual measurements in a colliery were undertaken.
Reference:
Joubert, F. 1967. Notes on methane pressure measurements in a South African colliery. http://hdl.handle.net/10204/12863 .
Joubert, F. (1967). Notes on methane pressure measurements in a South African colliery Retrieved from http://hdl.handle.net/10204/12863
Joubert, FE Notes on methane pressure measurements in a South African colliery. 1967. http://hdl.handle.net/10204/12863
Joubert F. Notes on methane pressure measurements in a South African colliery. 1967 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12863
