Rule 63. The following purchase records shall be retained for the periods listed:
(a) Advices or requisitions from storekeepers and others for the purchase of materials, supplies, or services. | Destroy at option. |
(b) Bids received from vendors in connection with the purchase of materials and supplies. | 3 years. |
(c) Purchasing department copies of purchase orders and specifications of materials ordered. | 3 years. |
(d) Contracts for the purchase of materials and supplies: | |
(i) Contracts for materials used directly in construction. | 6 years. (See rule 22(b)(i)). |
(ii) Contracts for other materials. | 6 years. (See rule 22(b)(ii)). |
(e) Purchasing department copies of invoices for materials and supplies. (See rule 24(l)(b) for original invoices). | Destroy at option. |
(f) Registers or similar records of invoices. (g) Price records or indexes of purchases. | 3 years. Destroy at option. |
(h) Advices from vendors that acknowledge receipt of orders for materials and supplies, notices of shipment, packing slips, and copies of bills of lading. | Destroy at option. |
(i) Receipts or delivery tickets issued for materials and supplies received in installments and subsequently surrendered with, and in support of, invoices or bills that cover complete purchases. | Destroy at option. |
(j) Demurrage or car records that show | Destroy at option. |
periods that freight cars are held on company sidings. | |
(k) Copies of notices to vendors for materials and supplies returned for credit and repair. | Destroy at option. |
(l) Lists or records of invoices transmitted to or from storekeepers. | Destroy at option. |
(m) Records and reports used for checking and tracing materials and supplies covered by invoices provided for in subdivision (e) of this rule. | Destroy at option. |
Mich. Admin. Code R. 460.2563