Continuous steel production / forging / edge tool production on this site for over 400 years. Now part of Attercliffe Steel Works (Sanderson Kaiser) this polygon shows the area of the earlier Attercliffe Forge as depicted on the 1851 OS 6 inch mapping. The Mill Dam is fossilised in the extent of the car park around which are buildings that were part of the later steelworks, constructed in the early twentieth century. The early buildings of the forge were probably rebuilt in the later 19th century with the introduction of steam power. Cartographic evidence suggests the dam was filled between the 1948 OS 6 inch survey and the 1953 1:1250 survey. Earliest date researched by Crossley et al (1989, 20) for a forge belonging to the Shrewsbury family. The surviving weir dates to 1825 when it was rebuilt by Naylor and Sanderson. The race is also shown on a 1768 plan of the complex (reproduced, ibid.) although much narrower than the surviving work. It is likely to have been widened c.1825. SMR record 1703/01 records cementation steel produced at this site in the period 1691- 1765.