brigham young supervised construction by the mormon pioneers of winter quarters in 1846. the florence mill is the only surviving building to have been built by the mormons. the settlers needed a mill to grind corn, wheat, and rye to create cornmeal and flour products. constructed next to turkey creek, later called mill creek, which flowed into the missouri river, the original structure was deserted in 1846. a new mill was built in 1847 at the cost of $3000. brigham young sold this mill to john neff, who deserted it when he moved to salt lake city.