Salvage business full of adventure, danger, reward

Lots of people know how to construct buildings. Chris Donna knows how to deconstruct them. "Given enough time," he said, "I can completely take a building apart, in reverse from the process in which it was built. I could save every single nail that comes out of it." But Donna, one of the owners of Provenance in Northern Liberties, usually isn't given enough time as he attempts to dismantle crumbling churches, warehouses, and hospitals.