A corn mill is depicted on the 1st edition of the 25-inch O. S. map of 1883, fed by a 140 metre-long mill race from weirs and sluices on the Tresenny Brook. By 1901, the date of the 2nd edition map, the mill was disused and the race was named "Old Mill Race". The building and the outline of the long mill pond remains on the 3rd edition map of 1920.
W J Crompton, RCAHMW, 21 April 2011.