The Sloss Mines are a group of mines in southwestern Jefferson County, Alabama. They were established by the Sloss Iron and Steel Company and its successor, the Sloss-Sheffield Iron and Steel Company, on the southern end of Red Mountain. The Sloss Iron and Steel Company itself was founded by James Sloss in 1881 as the Sloss Furnace Company. The Sloss Mines produced iron ore from 1882 until the 1960s. The ore that these mines produced were essential to the production of iron at the Sloss Furnaces, making them an important element in the formation of adjacent Birmingham and Bessemer as cities.