You must protect employees at every hammer and press by:

(1) Making sure they do not place a hand or arm between the dies by providing them with devices that reach the full length of the die when removing scale. Examples include:

(a) Oil swabs.

(b) Scale removers.

(c) Other devices that remove scale by reaching the full length of the die.

(2) Stopping flying scale through construction and arrangement of a scale guard that is of substantial construction at the back of every hammer and press.