Section R. 408.18159 - PulverizersRule 8159.
(1) A belt drive used in connection with a pulverizer shall be grounded to remove static electricity.(2) Pulverizing equipment shall be dust tight. Electrical equipment and motors located in the room or area shall be dust ignition proof, class II, division I type.(3) A magnetic separator shall be installed at the material inlet to a pulverizer.(4) When there are multiple pulverizers and the final pulverized material is pneumatically conveyed, each conveyor system shall be independent of the other and electrically grounded to reduce the likelihood of fire or explosion.Mich. Admin. Code R. 408.18159