Author:Joubert, FEDate:1967Some 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 ...Read more
Author:Joubert, FEDate:1972The report details the attempts to assess the value of surveys of dust conditions in collieries that may constitute explosion hazards are presented in this discussion.Read more