Job Description:

• 1) Controls pressure, temperature, and water level of cooking tanks, and operates centrifuges and separators, to manufacture animal glue: Admits hot water and steam into cooking tanks containing crushed animal bones, following specifications.

• 2) Cooks glue solution to evaporate water from glue.

• 3) Reads gauge of hydrometer to determine percentage of glue solid in solution.

• 4) Disassembles plates of centrifuge, using wrench and hoisting device; and cleans plates, using brush and abrasives.

• 5) May weigh and add specified amounts of chemical to preserve glue.

• 6) May direct other workers engaged in cleaning tanks or vats.