A professional who tends pneumatic coal-cleaning table that blows coal dust, sulfur, and other impurities from coal as it passes through preparation plant. Respnsibilities include:

• Starts machine and adjusts valve to regulate air pressure.
• Observes coal as it passes over cleaning table and removes oversized lumps, rocks, or foreign matter.
• Adjusts and lubricates mechanical parts of machine, using handtools, grease gun, and oilcan.