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Vulcan Iron Works was the name of several iron foundries in both England and the United States during the Industrial Revolution and, in one case, lasting until the mid-20th century. Vulcan, the Roman god of fire and smithery, was a popular namesake for these foundries.

During the Industrial Revolution, numerous entrepreneurs independently founded factories named Vulcan Iron Works in England, notably that of Robinson Thwaites and Edward Carbutt at Bradford, and that of Thomas Clunes at Worcester, England. The largest of all the ironworks of Victorian England, the Cleveland Works of Bolckow Vaughan in Middlesbrough, were on Vulcan Street.

The Vulcan Works at Thornton Road, Bradford was a spacious and handsome factory. It was described in Industries of Yorkshire as

the largest of their kind in Bradford, and the centre and headquarters of an industry of magnificent dimensions and condition throughout. The works cover about four acres of ground... The buildings are all of stone, and the mechanical equipment could not be surpassed in efficacy at the present day, for it includes the latest and best improvements in all kinds of apparatus that can be advantageously brought to bear upon such an industry as that here engaged in. The working staff numbers about 200 men; and the perfection of order and system prevails in each and every department.

The Vulcan Iron Works at Osmaston Road, Derby was founded in 1874 by Francis Ley (1846-1916). On a site occupying 11 acres by the Birmingham and Derby Junction Railway, he manufactured castings for motor cars. The company became the Ley's Malleable Castings Company Ltd. In the London Gazette of April 14, 1876, Ley was granted a patent for "improvements in apparatus for locking and fastening nuts on fish plate and other bolts". The iron foundry was closed and demolished in 1986.

The Vulcan Iron Works at Cromwell Street, Worcester was founded in 1857 by Thomas Clunes (b. 1818, d. 28 September 1879). The firm started out as "Engineers, Millwrights, Iron & Brass Founders, Plumbers etc", according to the listing in Kelly's Directory. The works had a single tall tapering square chimney, a covered area with open sides, and a handsome main building on a largely open site on the west side of the Worcester and Birmingham Canal.

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