Wis. Stat. § 107.02
When there is no agreement between the parties to any mining lease, license or permit, to mine or remove nonferrous metallic minerals from any lands in this state, regulating the method of reporting the amount of nonferrous metallic minerals taken, the person mining and removing the nonferrous metallic minerals shall keep proper and correct books, and therefrom to make and deliver by or before the fifteenth day of each month to the lessor, owner or person entitled thereto, a detailed statement covering the operations of the preceding month. The statement shall show the total amount of tons or pounds of each kind of nonferrous metallic minerals produced; if sold, then to whom sold, giving the date of sale, date of delivery to any railroad company, naming the company, and the station where delivered or billed for shipment; the name and address of the purchaser; the price per ton at which sold and the total value of each kind of nonferrous metallic minerals so sold. The books shall be always open to any owner, lessor, licensor or stockholder, if the owner, lessor or licensor is a corporation, and to any person or stockholder interested in any such mining operations, for the purpose of inspection and taking copies thereof or abstracts therefrom. Any person and every officer, agent or employee of any thereof, who violates this section, or who makes any false or incomplete entries on any such books or statements, shall be fined not less than $100 or imprisoned in the county jail for not more than 3 months or both.
Wis. Stat. § 107.02