I left Uniontown or area in 1978. There were some companies across from Penn State. I remember Fruehauff and Malesbury. I don't think those are spelled right, but they left because of Union organizers and workers striking for higher wages. In fact I think thats why Chrysler left.
Those are before my time. I do see some company making military armor, looks like tank skeletons and bradley skeletons for the army there now across from Penn State.
Sony was another one that surprised me when they closed a while back. I don't know why Sony closed up really, I know several guys who worked there and they weren't overpaid by any means, and there was a lot of pride working at Sony. Sony seemed to do a good job picking their employees. The several guys I know who worked there were sharp conscientious workers. I would think this would have been the perfect environment for Sony.