Mich. Comp. Laws § 339.1859

Sec. 1859. (1) A refrigeration facility shall designate a holder of a license for the practice of mortuary science as a manager of the refrigeration facility. The manager shall supervise the handling and sheltering of a dead human body at the refrigeration facility. The manager shall not otherwise engage in the practice of mortuary science while acting as a manager for a refrigeration facility. (2) A holder of a license for the practice of mortuary science shall not manage more than 1 refrigeration facility. A holder of a license for the practice of mortuary science who manages a funeral establishment under section 1809 shall not manage a refrigeration facility. (3) A manager of a refrigeration facility shall not reside more than 100 miles from the refrigeration facility.