Tenn. Code Ann. § 59-13-131

The association through its board of directors may bid for and execute marketing contracts subject to a majority vote of its members requiring the members to sell, for any period of time, not over ten (10) years, all or any specified part of their coal exclusively to or through the association, or any facilities to be created by the association. If they contract a sale to the association, it shall be conclusively held that title to the products passes absolutely and unreservedly, except for recorded and statutory liens, to the association upon delivery. The contract may provide, among other things, that the association may sell or resell the products delivered by its members, with or without taking title to such product; and pay over to its members the resale price, after deducting all necessary selling, overhead, and other costs and expenses, including interest or dividends on stock, not exceeding eight percent (8%) per annum, and reserves for retiring the stock, if any; and other proper reserves; and/or any other deductions.