R 408.11433 Stop devices.

Rule 1433. (1) An emergency stop device shall be available at each point of operation where a hazard exists and within reach of an employee at that point. (2) An emergency stop device of the momentary-contact type shall have a means of being maintained by a device in the "off" position. (3) If more than 1 stop device is located along a conveyor, the devices shall be wired so that the conveyor can be made re-startable only at the location where stopped. (4) A stop device, except a pull cord, shall be distinguished by its red color. (5) Conveyors in a series shall be electrically interlocked so that when any conveyor in the series is stopped for any reason, the initial stopping shall cause the upstream conveyors to stop if continued operation creates a hazard.