Not too long ago, I had a great view out my office window when they tore down about a dozen 5 story brick apartment buildings built in the 1950's. They had two of those rotorchoppers like devices set up to deal with the debris. A front end loader dropped stuff into the bin for the first one which did some sort of rough cut, dumping the results out on a convey belt. About a dozen people sorted this debris before it went to a 2nd unit that did the fine chopping. It looked like they were sorting out usable bricks along with several other piles. Guess I should have taken photos.
Bob