Share FLEX-MAT Type D February 09, 2017 Manganese Ore Manganese Ore operation in Australia. 1 Situation Single-deck scalping screen box running woven wire media causing severe pegging issues, resulting in downtime and production losses. 2 Problem A manganese mining operation suffered from severe pegging using traditional woven wire screen media. Extensive pegging issues. Shutting down daily to clean media. 3 Solution Switched to FLEX-MAT Type D with 2½" (63mm) opening. Eliminated pegging and downtime. Reduced oversize material. 4 Benefits FLEX-MAT increased production by 140 TPH. Oversize to crusher nearly eliminated. Greater wear life and open area due to the OptimumWire used. The operation ran over 2 years without stopping to clean the screen media.