General industrial factory complex of large sheds producing industrial blacking (SYFWI & WYFWI 1991: 217). Formerly Water powered site shown on earlier maps as Plumpton Woollen Mills. Thurlstone was a local centre for woollen manufacture in the medieval period but the origin of this mill is uncertain. Only certain trace of water powered origins is the proximity to the river and the Mill dam in the north west of the polygon. Up until 1989 mapping the mill race and reservoirs were still extant but have now been filled in so legibility of the water-powered site is fragmentary. The 1870s mill building in the north east of the polygon also remains. The mill is shown on the 1816 Thurlstone enclosure award and the land to the south of the mill race is marked as enclosed. This was quite regular enclosure so may be for e relatively late date. Prior to this the land was probably unenclosed commons along the river.