Keywords: Feed Production Supervisor, Production Supervisor, Shift Supervisor, Feed Mill Supervisor, Mill Lead, Pellet Mill Operator, Batching, Feed Mill, Feed Manufacturing, Production Lead, Assistant Feed Mill Manager, Livestock, Ag, Agriculture, Beef, Dairy, Swine, Poultry, Production. GPAC (Growing People and Companies) is an award-winning search firm specializing in placing quality professionals within multiple industries across the United States since 1990.