The ruins of a small water-powered corn mill lie in Cwm Nash, between a track to the south and a stream to the north. The northerly gable wall, against which was the waterwheel, stands to its full height, but the other walls are ruined more or less to ground level. The leat is visible and terminates at the mill at eaves level; the stone base of the wheelpit is clear and its floor is just above the stream level, both features together suggesting an overshot wheel about 3.6-4.2m (12-14 feet) in diameter by about a metre (just over three feet) wide. The annotation 'mill' is shown on an historic admiralty chart in close proximity to the head of a stream and the mill is depicted and annotated on the first edition Ordnance Survey 25in mapping (1877) as 'Old Corn Mill'.

Sources include:
Site visit by B.A.Malaws, RCAHMW 200 October 2010;
Historic Admiralty Chart 1183-A2 RCAHMW Digital Collections sourced from the UK Hydrographi Office and published in 1839.

RCAHMW, Janaury 2012.