This modern mixed industrial / commercial area was once the enormous Atlas and Norfolk Steel Works of Firth Brown demolished and cleared by the Sheffield Development Corporation in the early 1990s (Hey et al 1997). The large sheds of this works (of which fragments survive to the north east) had evolved from constant redevelopment and combination of earlier works including the Aetna Works of Spear and Jackson (1846), a smaller Atlas Works of John Brown (1857), Thomas Firth and Sons' Norfolk Works of 1855 and the Bessemer works 1858 (Set up by Henry Bessemer in order to exploit his new bulk steel technology) (Dates from Barraclough 1976 and Hey et al 1997). The plant at the works was modernised in 1973 but the works were closed in 1983 following the steel recession. Little legibility of the earlier works or even earlier surveyed enclosure survives within this polygon and ground 'remediation' by the Sheffield Development Corporation may have seriously denuded archaeological potential.