Job Description:

• 1) Controls mixing machine and auxiliary equipment to blend ingredients for explosives, such as dynamite, smokeless powder, and solid-propellant rocket fuel: Weighs out and charges specified quantities of solid materials into mixer, or feeds preweighed materials into mixing chamber.

• 2) Meters prescribed quantities of liquid chemical agents, such as nitroglycerin, wetting agents, catalysts, or solvents into machine.

• 3) Starts mixer to blend ingredients for specified time or until prescribed reaction occurs.

• 4) Tilts mixer to discharge contents, moves dump lever, or shovels materials into containers for storage, shipment, or further processing.

• 5) May compute quantities of chemical agents required for batch of given size, according to formula.

• 6) May tend auxiliary equipment units, such as dissolving tanks, oven, or vibrating screens, to prepare or further process materials before or after mixing.

• 7) When blending ingredients for pyrotechnic tracer shells, is designated Composition Mixer.

• 8) When mixing nitroglycerin and dry ingredients to produce dynamite, regulating mixer speed and ingredients according to grade and type of dynamite specified, is designated Dope Mixer.