A professional who assists reagent tender in separating metallic particles from gangue of ore. Respnsibilities include:

• Connects air line and line from storage tank to tank car, using handtools.
• Turns valves to release air pressure into lines, and observes connections for leaks.
• Turns valves to pump chemical solutions, such as chlorine, caustic soda, and fuel oils, from tank cars into storage tanks.
• May weigh steel rods and balls and transport them to mills, using air-powered dinkey engine.
• Performs other duties as described under helper master title.