The Pressed Steel Car strike was a battle between strikers, private security agents, and the Pennsylvania State Police. Over 300,000 steelworkers and 400,000 mine workers took part in the strike. It all started on July 10th when it was payday the workers recieved less pay than normal. Some workers told their employers they wouldnt come back to work until they got the pay they deserved, and eventually when they did come back 3 days later, they were all fired. 500,000 + went on strike after this.