Steel mills were notorious for using bolts in the motor disconnects, they'd rather smoke a motor than shut down a line.
A lot of their practices were suspect at best, like one company needed room for expansion so they started dumping slag in Lake Erie after awhile it was more slag at where they werer dumping than water so they would build new buildings on top of the slag, problem was most of the machines had 2 to 3 feet of water around them, the operator station was raised so he could see what he was doing and be out of the water. In the winter the water would freeze because there was not any heat except the heaters for the gearboxes, Thank God for OSHA .. they finally shut this place down. at least the expansion practices and the lack of heat.
