A professional who tends gravity separator to separate nitroglycerin from spent acids, preparatory to washing, neutralizing, and processing into explosives. Respnsibilities include:

• Turns petcock to transfer mixture of spent acids and nitroglycerin from batch nitrator to separator.
• Turns petcock to drain acids from nitroglycerin into trough leading to spent-acid storage.
• Observes liquid flowing from spigot and moves trough to discharge product into wash tank when color change indicates nitroglycerin is flowing from separator.
• Observes tank thermometer to detect accumulation of heat that could cause decomposition and explosion and turns valves to regulate heat to prevent explosion or decomposition.
• May move control to dump tank contents into water-filled vat if temperature increase indicates explosion may be imminent.
• May wash and neutralize nitroglycerin.