Mill Springs Grist Mill Opens for 2021 Summer Season May 29, 2021. The Mill Springs Grist Mill will be open from 9am till 5pm on Saturdays, Sundays and Holidays beginning May 29th and will continue seasonal operation through September 6th. The Woman’s Club Gift Shop will be open 10am-5pm. Tours for the Mill and the historic houses will be from 10am-5pm. Guided tours will be provided every half hour, with corn grinding demonstrations at 2:00pm each weekend day. Call 606-679-6337 for additional information.