A professional who tends equipment that separates naphthalene from chemical drain oil used to wash coke-oven gas or tar distillate. Respnsibilities include:

• Starts pumps to remove drain oil from scrubbing tower to collecting tank where naphthalene settles and crystallizes as oil cools.
• Opens drain valves or starts pumps to remove oil from pans to storage tanks.
• Dumps crystals into centrifuge to remove remaining oil.
• Dumps or shovels crystallized naphthalene into steam-heated tank to melt and further purify crystals.
• Draws sample from melting tank for laboratory analysis.
• Starts pumps to transfer naphthalene into storage tanks or railroad tank cars.
• May be designated according to work performed as Drier Tender, Naphthalene.