The town has a range of businesses, mainly located on the Callywhite Lane Industrial Estate at the eastern end of the town, and along Wreakes Lane and Stubley Lane northwest of the town centre. The main businesses in the town were originally associated with engineering trades, but over recent years have diversified. William Lees Iron Foundry, manufacturer of machinery parts, moved to Dronfield in 1870 and was responsible for major growth in the town at that time. Until the mid 1970s it specialised in production of malleable iron castings, though much production now is of spheroidal graphite iron.