Rule 10. If, after appropriate application of feasible engineering and work practice controls, the use of respirators is necessary to maintain exposure below permissible exposure limits, the employer shall provide, at no cost to the employee, the proper respiratory protection equipment. Respirators shall be selected and used in accordance with the requirements of Occupational Health Standard Part 451 "Respiratory Protection," as referenced in R 325.70102a.
Mich. Admin. Code R. 325.70110