device to prevent pylu, especially pylu rock, roof and a heart attack in front of a disc or kroczacej, especially in coal mines

摘要

1518536 Dust suppression in mines ROSLER GmbH [trading as DRAHTWERK ROSLER KG] 29 Aug 1975 [3 Sept 1974] 35820/75 Heading E1F A sheet material for installation between roof support means and the roof of a mine gallery to minimise dust in the gallery comprises wire mesh with dust impervious foil 4 secured in between the longitudinal and transverse wires 2, 3 of the mesh, said wires being welded together at their cross over points 5.