A professional who operates crushers, mixers, and blenders to grind, mix, and temper clay for use in molding ceramics products. Respnsibilities include:

• Drives liftscoop tractor to convey clay from storage piles or bins and dumps material on crusher pit grates.
• Breaks up clay with bar or sledge.
• Starts crusher, conveyors, elevator, and vibrating screens to grind raw materials to specified size and to transport ground materials to storage bins.
• Examines screens and clears blockages, using wire brush.
• Weighs and dumps raw materials into mixing machine, following formula.
• Starts mixer and turns valve to feed water into mixing machine.
• Inserts instrument into mixture to measure water content.
• Discharges mixture onto conveyors leading to blending machine.
• Starts blending machine that mulls mixture into tempered clay.
• May be designated according to machine operated as blender operator; crusher operator; mixer operator; or according to kind of materials processed as clay-dry-press-mixer operator; silica-mixer operator.