... highwalls, and other fireproof structures.Application of HockGrid® Mine Grid (Polyester Geogrid) 1000-1000kN/mis applied to ... Protection4. Replace Metal Mesh,Plastic gridPerformance of HockGrid® Mine Grid (Polyester Geogrid) 1000-1000kN/mAmong traditional methods, ... Hock Mining Engineering Co.,Ltd Mine Grid,Mining Grid,Polyester Geogrid Manufacturers. Mine Grid 1000-1000kN/m for Underground Support