The comment was made that the stacks have to come down because of corrosion. It depends where the corrosion is. At Longleaf, we lost one of the mill stacks in a hurricane, and the other three were in danger of collapse because rain entering the stacks, rusts them out where they enter the boiler and the lack of foundation support makes them dangerous. The museum was able to weld a collar about 15 feet up on each stack, and then a tripod was welded to the collar and fastened to the floors. The steel at the collar level is still better than 95% there, and now the water just runs out the bottom of the stacks. True, they are no longer attached to the boilers, but they really were not attached any more, anyhow. If that is the problem at Orbisonia, if you will send me a private message with your email, I can send pictures as to how it was done here. It was a lot cheaper than removing the stacks, and a lot better.