A professional who tends centrifugal wringer to remove acid or water remaining in nitrocellulose after processing. Respnsibilities include:

• Starts pumps to convey partially processed nitrocellulose slurry to wringer basket.
• Moves control to regulate speed of wringer throughout process, as instructed.
• Stops wringer after specified time and loosens nitrocellulose from walls, using scraper or fork, Opens discharge gate and pushes nitrocellulose through aperture into water immersion bowl to convey slurry to next operation, or hopper to be packed into containers.
• When removing water from nitrocellulose, may be designated Poacher-Wringer Operator.
• May take samples of nitrocellulose for laboratory analysis.