Turns out that in order to comply with ALL codes, this process is being abandoned, and will be removed from the structure.
Engineering ideas ranged from controlled sectioning-off of that area with dust collection; which would place the equip in the pic outside of the dust area. Replaceing the electrical with dust-tite, sealing the conduits, and replaceing the motors, etc is cost prohibitive. Outright dust control/management could not be achieved, per engineers.
All in all, it was correcting a possible bad situation beforehand.
