page_title: Darnall Works
section_title: Expansion
hierarchical_section_title: Darnall Works / Expansion
caption_attribution_description: English: Crucible Steel Shops on South East Side of Sandersons Kaysers Darnall WorksThis is a photo of listed building number 1247369.
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: The establishment was successful and, in 1871, Sandersons decided to concentrate production at the Darnall site. To increase capacity, the firm constructed several new buildings in 1871 and 1872, and these are the oldest surviving structures on the site. Cementation furnaces had fallen out of favour, and the new buildings instead contained 180 crucible furnaces.  Two abutting ranges of steel shops survive, both single-storey, in brick with asbestos cement, roofed partly in slate and partly in corrugated asbestos. The south-east range provided 84 holes for steel manufacture, while the south range had 24, designed to allow the casting of big objects using the "continuous teeming" method of production; a further west range was similar to the south range, giving a total of 132 melting holes. The south range alone cost £6000 to construct, and it remained in use for around fifty years, briefly resuming production during the Second World War. The two ranges are Grade II* listed and form the core of the Scheduled Ancient Monument.
  At the same time, ancillary structures were added, including a two-storey office building, lodge, weighbridge and boundary walls. Constructed in brick, these all survive and are Grade II listed, and also form part of the Scheduled Ancient Monument.
  In 1873 and 1874, a further range of crucible furnaces was added, powered by a Siemens gas furnace, with its own gas plant adjoining. This was one of the first in the city, giving the same capacity as sixty traditional crucible furnaces.
caption: South East Crucible Steel Shops, dating from the 1870s
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