... Replace Metal Mesh,Plastic gridPerformance of HockGrid® Mine Grid (Polyester Geogrid) 1000-1000kN/mAmong traditional methods, room-and-pillar or ... Polyester Geogrid) 1000-1000kN/m Tensile strength ( warp/weft )kN/m: 30/30,40/40,50/50,60/60,80/80,100/80, ... Hock Mining Engineering Co.,Ltd Mine Grid,Mining Grid,Polyester Geogrid Manufacturers. Polyester Mine Grid 1000-1000kN/m for Longwall Recovery Systems ...