A professional who operates machines to process dental-amalgam and tests amalgam with interferometer. Respnsibilities include:

• Anneals ingot of tin, copper, and silver to obtain specified molecular characteristics.
• Cuts ingot into chips of uniform size, using engine lathe.
• Pours chips into hopper of grinder and starts machine to grind chips into microgranules of specified size.
• Loads granules into elutriator and turns valve to regulate flow of water that forces granules through sieves to separate granules, according to size.
• Loads moist granules in drying machine or oven.
• Mixes specimen quantity of alloy with mercury, using amalgamator machine or mortar and pestle, and packs mixture into mold.
• Removes amalgam from mold and places amalgam between glass panels of instrument.
• Counts black bands appearing within circle of instrument and informs supervisor of number of bands.