A professional who tends vacuum pan to wash and dry crystallized tetryl powder for further processing into explosives. Respnsibilities include:

• Opens release valve to transfer tetryl from crystallizer to vacuum pan.
• Fills pan with warm water and turns suction valve to draw off liquid and dissolved impurities, leaving powder to settle in felt bag.
• Shovels and scrapes powder into tub on handtruck.
• May scrape powder into trays and place trays in drying chambers.