A professional who tends mill and agitating vat that grind and mix flour and malt with water, to make malted milk mash. Respnsibilities include:

• Turns water valve to fill vat and starts grinder and agitator.
• Transfers flour and malt from storage silo by moving microswitch controls to deposit specified amounts through automatic scale hopper into mill or by placing counters on meters and starting conveyors that carry measured amounts through grinder into vat.
• Observes ammeter, and grain and water meters to detect deviations from specifications, and moves levers to alter grain and water flow.
• Pumps mash to mash kettles.
• May heat mash by mixing steam with water.