Job Description:

• 1) Operates machines to process dental-amalgam and tests amalgam with interferometer: Anneals ingot of tin, copper, and silver to obtain specified molecular characteristics.

• 2) Cuts ingot into chips of uniform size, using engine lathe.

• 3) Pours chips into hopper of grinder and starts machine to grind chips into microgranules of specified size.

• 4) Loads granules into elutriator and turns valve to regulate flow of water that forces granules through sieves to separate granules, according to size.

• 5) Loads moist granules in drying machine or oven.

• 6) Mixes specimen quantity of alloy with mercury, using amalgamator machine or mortar and pestle, and packs mixture into mold.

• 7) Removes amalgam from mold and places amalgam between glass panels of instrument.

• 8) Counts black bands appearing within circle of instrument and informs supervisor of number of bands.