page_title: Darnall Works
section_title: Kayser Ellison works and merger
hierarchical_section_title: Darnall Works / Kayser Ellison works and merger
caption_attribution_description: English: Main Building in the centre of the Sandersons Kaysers Darnall Works site in Sheffield
context_page_description: The Darnall Works is a former steelworks in the Darnall area of Sheffield in England. The only remaining large complex of crucible furnaces, the works opened in the 1835 and were frequently extended and adapted until the late 20th century. Some of the structures at the works are listed buildings, at Grade II* and Grade II, and part of the site is a Scheduled Ancient Monument.
context_section_description: In 1912, Kayser, Ellison and Co. decided to establish a new steelworks, using electric arc furnaces, and adjoining the existing Darnall Works. Completed the following year, it included two large buildings: a two-storey heat treatment workshop and a three-storey steel working shop.  In each, a steel frame is infilled with brick, glass and concrete, and the roofs are of corrugate iron.  This form of construction was then novel, and this contributes to the listing of each at Grade II.
  In 1934, Sandersons transferred their works to Kayser Ellison, combining the two sites to form a new, larger Darnall Works. Sandersons had finally stopped using their cementation furnaces in the 1920s, and Kayser Ellison soon demolished these, along with the west range of crucible steel shops from the 1870s.
  Kayser Ellison merged with Sandersons in 1960, forming Sanderson Kayser. A new main building was completed in 1967, incorporating a former stock warehouse, and measuring 500 by 59 feet (152 by 18 m) in plan and more than 18 feet (5.5 m) high, with a further 200-foot-long bay containing the new heat treatment workshop. This building contained several large furnaces, using butane in a first for the city. This allowed many buildings to be put to new uses: the south-east crucible shops as stores, the heat treatment workshop as a stock grinding plant, and the steel working shop as an annealing and cleaning plant.  The gas-fired crucible furnaces and the gas plant were demolished, but English Heritage believe that substantial remains of these exist below ground.
  By the end of the 20th century, Sanderson Kayser had concentrated production on its nearby Newhall Road site, and left the Darnall Works disused.
caption: Main building of 1967
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