Water-powered processes were in operation at Kelham (to the immediate east of the present termination of the Kelham goit) in 1604 when a grinding wheel was leased from the Shrewsbury Estate by Kellam Homer, the town armourer (Crossley et al 1989, p 14). The mill (the position of which is shown on Goslings plan of 1736) was placed across the goit, which also provided water to the Town Corn Mill (dating to the 12th century) further to the south east. A bypass goit around the Kelham wheel is mentioned in a record from the Court Leet of 1609 (quoted in ibid) and shown on the Gosling map. This channel provided a means of ensuring unimpeded flow to the corn mill at times when the Kelham grinders were not working. SMR record PRN1690 indicates that this site was active until 1773 (after successive rebuilidngs) when it was converted to use as a cotton mill. By 1815 use had reverted to grinding. In 1864 this site was converted into the Britannia Corn Mill. The corn mill remained in water-powered operation until 1947. The buildings were demolished in 1975. Crossley records that the surviving remains are the best preserved examples of weir and shuttles in the Sheffield area. The wheel pit is also in good condition and is on display as part of the Kelham Island Museum. Significant legibility of water power features. NB. Kelham goit continues in a culverted channel along the line of Alma Street to the site of the medieval town mill. Polygon includes a small overgrown island to the immediate east of the weir, probably formed by the accumulation of sediment resulting from the sudden loss of flow caused at this point by the weir.