Rule 66. The following records of sales of scrap and materials and supplies shall be retained for the periods listed:
(a) Authorizations for the sale of scrap and materials and supplies. | 3 years. |
(b) Contracts for the sale of scrap and materials and supplies. | 3 years. |
(c) Memoranda pertaining to the sale of scrap and materials and supplies. | Destroy at option. |
Mich. Admin. Code R. 460.2566