Colonel James Withers Sloss was one of the founders of Birmingham, helping to promote railroad development in Jones Valley, Alabama and participating in the Pratt Coke and Coal Company, one of the new city's first manufacturers. In 1881 he formed his own company, the Sloss Furnace Company, and began construction of Birmingham's first blast furnace on 50 acres (202,000 m²) of land donated by the Elyton Land Company for industrial development. The engineer in charge of construction was Harry Hargreaves, a former student of English inventor Thomas Whitwell. The two Whitwell-type furnaces were 60 feet (18 m) tall and 18 feet (5.4 m) in diameter. The first blast was initiated in April 1882. The facility produced 24,000 tons of high quality iron during its first year of operation. Sloss iron won a bronze medal at the Southern Exposition held in 1883 at Louisville, Kentucky.