Operating machinery on the job imposes a responsibility on the user. You must be authorized by a supervisor to use the equipment, in a state of alertness and fully trained to operate the machinery. You must never leave machinery operational while you are not in total control of it. Be sure to obey all operating guidelines. If something doesn't feel right, stop the machine and investigate.
Be Machine Smart
Takeaway: Only use machinery that you have been authorized to operate, check the machine before operation and do not leave it running when you are not attending to it.