Bessemer is situated in the midst of the iron ore and limestone district of Alabama, in the southern part of Jones Valley (about 3 miles wide). Iron ore was mined on the hills on the city's southeast side, coal was (and still is) mined to the north and west, and limestone deposits were also nearby. All three ingredients were necessary for steelmaking, which led to the area becoming a major steel center from about 1890 through the 20th Century. Steel is no longer made within the city limits, but is still manufactured in nearby Fairfield.