Mich. Comp. Laws § 444.26

Sec. 26. All persons owning property or who may be interested in the same by way of chattel mortgage, contract of sale, or where property has been sold on lease, when stored in any public warehouse, at all times during ordinary business hours, shall, on production of either the warehouse receipt, chattel mortgage, contract of sale, lease, or any other written instrument showing that said person is interested in said property so stored, be at full liberty to examine such property, and all proper facilities shall be extended to such person by the warehouseman, his agents and employes for such examination.