A professional who operates grinding, mixing, and sifting machines to test operational conformance to customer specifications. Respnsibilities include:

• Selects grinding head and attaches part to grinder.
• Places material to be ground in hopper, sets speed, starts motor, and examines ground material.
• Adjusts or replaces grinding heads to obtain specified results.
• Connects liquid inlet hose to mixer, places material in hopper, and starts mixer.
• Adjusts paddle deflection, flow controls, and speed as necessary.
• Measures amount of electrical power used, using ampmeter.
• Writes report of operations.