A professional who tends equipment that boils, agitates, bleaches, and cleans tallow. Respnsibilities include:

• Turns valves to drain specified amount of tallow from storage tank into bleaching tank and to create vacuum inside tank when vacuum bleaching method is used.
• Moves controls to heat tank with steam and maintain specified temperature.
• Admits specified amount of carbon (ground charcoal) and diatomaceous earth into bleaching tank and starts agitator.
• Draws sample from tank and pours it through filter paper, observing its color for conformance to specifications.
• Adds tallow or diatomaceous earth to tank as required.
• Opens valves to force tallow by steam pressure through filter press to remove foreign material and into storage tank.