A professional who tends mill and separating equipment that grinds scrap or devulcanized rubber to reclaim and reprocess rubber. Respnsibilities include:

• Turns handwheel to adjust clearance between corrugated rollers of machine to accommodate stock.
• Loads rubber into machine hopper.
• Starts machine and observes stock to ensure passage through rollers.
• May use magnetic device to remove metal particles from ground scrap rubber.
• Moves handtrucks, containing rubber stock, into position for loading.
• May clean or replace clogged shaker screen that sifts out oversize pieces.
• May pick bead wires from ground rubber tire scrap.
• May be designated according to type of grinding as fine grinder.