Section R. 408.18160 - Feed hoppersRule 8160.
(1) A feed hopper for a grinder, pulverizer or food chopper shall have a guard over the hopper opening. The guard shall be 1 of the following: (a) A grid with opening small enough to keep the fingers from touching the feeding knives or worm.(b) A solid cover interlocked to the operating controls so that the machine will not operate when the cover is open.(c) A hopper of such length or opening that the fingers cannot touch the knives.(2) A feed hopper which is removable from a grinder, pulverizer or food chopper shall be interlocked to prevent operation of the machine when the hopper is removed.Mich. Admin. Code R. 408.18160