The 1st edition of the historic 25-inch O. S. maps, published in 1887, depicts a corn mill at this location in the Nant-y-Pandy, only 125 metres downstream from Felin-cadwnfa (NPRN 424367). A weir diverted water into a mill race 80 metres long on the east side of the valley. The building is shown on the 2nd edition map (1901), but it is not named and the mill race is not depicted; the mill had presumably gone out of use. Modern maps don't record a building at the site.
W J Crompton, RCAHMW, 13th June 2019.