In the foreground sit stacks of parts from a test facility at Arnold Air Force Base, Tennessee, June 29, 2022, showing the before and after states of chemical cleaning operations. The parts in the box are before cleaning. The parts leaning against the box have been cleaned. One of the steps in the process uses newly-acquired citrus-based cleaners, which were purchased to replace a significantly more hazardous chemical, hydrofluoric acid.

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Size: 3126px × 4796px
Photo credit: © Operation 2022 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arnold, chemical, cleaning, complex, development, engineering, machine, model, shop