A professional who performs any combination of following tasks in compound room of phonograph record manufacturing plant. Respnsibilities include:

• Weighs out specified quantities of ingredients, such as lampblack, resins and plastic materials, and dumps them into hopper of mixing machine.
• Pulls kneaded compound onto rollers of mixing machine, using hook, as material flows from discharge end of machine.
• Breaks plastic sheeting into sheets of uniform length as it emerges on conveyor from cooling process, and weighs sheets on skids.
• Removes labels from defective records, using machine, to salvage material for reprocessing.
• Dumps delabeled records into machine that grinds material into scrap.
• May be designated according to particular task performed as breaker table worker; grinder; roller hand; weigher.