Tends equipment that removes excess acid from nitrated crude tetryl explosive, preparatory to further processing: Opens valve to load vacuum pan with tetryl slurry.
Turns steam jet to draw off excess acid. Shovels and scrapes remaining moist powder from pan, grids, and filter cloth; and flushes it with water hose down into funnel leading to washing tubs. May neutralize acid water from subsequent washing operations. May shovel specified amounts of lime into hopper of lime feeder that neutralizes acid water from subsequent washing operations.
