CONCAVES FOR GYRATORY CRUSHERS, JAW PLATES FOR JAW CRUSHERS, CONVEYING CHAIN, ELEVATOR BUCKETS, PULVERIZER HAMMERS, GEARS, PINIONS, SPROCKETS, ROLLERS, POWER-SHOVEL PARTS, DIPPER TEETH, TRACTION DEVICES FOR POWER SHOVELS, LINKS FOR THE TRACKWAYS FOR SELF-LAYING-TRACK TRACTORS, BALL AND ROD MILL WEARING PARTS