Built between 1984 OS 1:10000 and 1999 Cities Revealed aerial photography this large shed type commercial unit was built on the site of the former Regent Steel Works. This large complex (mid twentieth century fragments of which survive to the south east of this polygon was first developed), was first developed as the Regent Steel Works of Bury's and Co founded on this site between 1851 and 1855. Illustrations of the works from company promotional material in 1876 (reproduced at http://www.shef.ac.uk/architecture/main/gallery/gal/diploma/liveproj/lp10/kelham/regent.htm - accessed 15th August, 2005, show, cementation, crucible and steam engine stacks, whilst the firm was advertising itself as producers of a variety of grades of steel as well as of finished products such as files saws, tools and shears and crucible castings. This evidence points towards the operation of Regent works as an integrated steel and tool works. The works was taken over in 1905 by Samuel Osborn and Company and demolished in 1983 (fragments of stone works from company sculptural signs are kept at the Kelham island museum (ibid). 1851 OS shows this area as occupied by small (possible allotment) garden plots. Invisible legibility.