... convenient construction 3.fire resistant,antistatic 4.polyester mine grid 400-400kN/m for long-wall recovery system roof support, ... also be supplied. We will manufacture mesh based on the parameters of longwall faces.Mine Grid Application Scopes:Longwall face recovery ... Mining Grid,Mining Geogrid,Polyester Geogrid,Biaxial Geogrid. mine grid 400-400kN/m for longwall recovery system,rib and roof support