... the phenomenon that workers transport and enter the downspoutings to connect the mesh frequently, reduce the labour intensity and improve ... the working face at one time, it is needless to connect the mesh during working, therefore, connecting time is saved ... Co.,Ltd Mine Grid,Mining Grid,Mining Geogrid,Polyester Geogrid,Biaxial Geogrid. mine grid 400-400kN/m for longwall recovery system,rib and roof ...