(1) Chippers. The feed system to the chipper must be arranged so the operator does not stand in direct line with the chipper spout (hopper). The chipper spout must be enclosed to a height or distance of not less than forty inches from the floor or the operator's station. A safety belt and lifeline must be worn by workers when working at or near the spout unless the spout is guarded. The lifeline must be short enough to prevent workers from falling into the chipper.

(2) Hog mills must be provided with feed chutes designed and arranged so that from no position on the rim of the chute will the distance to the knives or feed roll be less than forty inches. Baffles must be provided which must effectively prevent material from being thrown from the mill.

(3) Employees feeding hog mills must be provided with safety belts and lines, which they are required to use at all times, unless otherwise protected from any possibility of falling into the mill.