SC&RA Rigging Job, more than $750,000: Barnhart

The 600 US t (544t) precipitators were mounted on 50ft (15m) high elevated steel platforms, inside the working mill. Barnhart used a custom jack and slide system to move the precipitators off of their platforms, and on to a modular lift tower. This worked like an elevator to lower the precipitators to the ground, where they were carried across the factory floor to their new location. The system was then reversed, and the modular lift tower used to lift them up again above the platform, so that the jack and slide system could position them. Each move was finished a day early.