Power operated hammer mills for pulverizing or shredding material, and parts therefor, namely, double roll, metal turnings, rotary rings, single roll and swing hammers; power operated equipment, namely, flex-tooth crushers and shredders and parts therefor, namely, rotors, rotor discs, screens, pins, hammers, liners, grates, attrition plates; power operated equipment, namely, wood hogs, chip sizer for resizing chips and parts therefor, namely, rotors, rotor discs, screens, pins, hammers, liners, grates, attrition plates; power operated balanced and unbalanced vibrating conveyors and parts therefor, namely, pans, motors, power units, liners, gearbox, springs; power operated equipment, namely, vibrating feeders and parts therefor, namely, power units, springs, feeder decks, grizzly decks, feeder liners, feeder controls, mixers, hoppers, surge bins; pneumatic conveyors and parts therefor, namely, blowers, feeders, valves, cyclones, discharge devices, cyclone screens, expansion joints, tee injectors, pipes and fittings, elbows, silencers; bulk material handling machine systems comprised of flexible or rigid screw conveyors, mechanical conveyors and volumetric feeders for powders and bulk solids and parts therefor, namely, silos, storage bins, a-frame storage, chutes, conveyors, loaders, unloaders, truck dumpers, dryers, car haulers, log handling decks, sludge handling, structural parts and trusses, control systems, refuse equipment, bucket elevators, lump breakers; power operated screening and processing machines for use in wood, agricultural, municipal solid waste, refuse derived fuel and plastics processing purposes and parts therefor, namely, power operated chippers, chip screeners, density separators, chip classifiers, chip crushers, fines screens and parts thereof, namely, feeders, blowers, ducting, cyclones, chutes, shafts, knives, drums, motors, screens (trommel, disc, bar and flexible mat), stone traps, slicers, strand splitters, bag openers, sediment separators; power operated equipment, namely, stackers, reclaimers and parts thereof, namely, belt pile builders, scissors lifts, stackers, chains, bins, hoppers, tube feeders, stokers, sliding frame, screws; power operated equipment, namely, conical reclaimers, linear reclaimers, circular reclaimers; power operated equipment, namely, primary resin feeders or delumping machines for use in manufacturing of plastic resins and parts therefor, namely, rotary feeder, hydraulic power unit, motors, gearboxes, control systems, inlet and outlet transitions