Rubber screens for use in mining and material transfer or separation, mill linings, shell linings, head linings, head plates, grate discharge linings, fastening systems for use in machines, feed chute linings, trunnion linings, trommel screens, screen decks, screening and material sorting machines, protective panels and screens for use with machines, fixing rails for screening and material sorting machines, parts and accessories for screening machines, feed area impact plates, wear liner plates, rubber wear elements and ceramic wear elements being parts of machines, conveyor impact assemblies, conveyor skirting systems, crusher backings