Presently part of a mixed commercial, leisure and business park created on former industrial land across an alluvial plain between the River Sheaf and the 1870 Midland Railway. This polygon shows the outline of the former dam and associated water powered complex of 'Little London Wheel' - known to have been in use by 1720 (Crossley 1989 p105). W Fairbank's "A Plan of George Hobson's Mill . . . At Heeley" (1770), shows the mill at this time to have been sited slightly upstream from its 19th century position. The site is known to have been significantly altered during the 1780s as Fairbank was again called upon to survey the site with regard to " 'the works made by Thomas Biggin' on behalf of Samuel Shore recording the 5 acre New Dam" (Crossley 1989 p105). A watching brief on the construction of a new road linking Broadfield and Little London Road in 2002 gave weight to this interpretation when on the expected site of the early complex a wooden culvert was discovered containing a stoneware cup dated to around 1720-1750 (Saich pers com 2005). The mill site was purchased in 1876 by W Tyzack, Sons and Turner. These works were originally established between the Little London Wheel and the Heeley Corn mill sites with the existing buildings being colonised and reused within the later works a later large integrated steel works (Badcock 2002, p2). The 'New Dam' was reduced to the size of the area represented by this polygon by the construction of the Midland Railway to the south east and the 'Mining Tool Works' to the south west of the site in the 1870s and 1880s (OS map evidence). Despite this the water wheels of the forge were modernised by the Tyzack company and remained in operation until the 1950s (Crossley 1989, 106). The forge was demolished in the 1970s and the remaining dam subsequently overbuilt. Fragmentary legibility of site from dam overflow which survives in the river wall by the footbridge from Broadfield Road, and by the display at present ground level of stonework preserved from the dam wall discovered during archaeological excavation in 2002. The position of the adjacent wheel pits is marked in a pavement by a change in brickwork. It is intended that these features will in the future be enhanced by interpretation panels.