In July 1853, the Mining Journal published a report stating "excellent stones of black and grey ore" had been found only 7fms from surface on the remote North-Western facing side of Carnmenellis hill.
As far as recorded mining is concerned, the stanniferous zone of the Wendron granite ends at Polhigey Moor; making the discovery of copper immediately to the north quite interesting. Despite the discovery of also a parallel tin lode, nothing much is recorded of the trail which was said to have erected a small steam engine at one point.
Despite workings having for all intents ceased by the end of the year, mining cartographers and lithographers; Symons of Lemon Quay, Truro, recorded no less than 7 lodes crisscrossing Carnmenellis hill. Presumably this was the result of intelligence gathered in the trials of Wheal Lily.
Today the shafts remain flooded; evidence that the venture was not worthy of driving an adit.
Data courtesy of Ben Sum, Helston (31/8/18).
Mining Journal 23/7/1853
Symons, R, 1856 "Geological Mining Map of the West Cornwall Mining District" Lemon Quay, Truro
2nd Edition, Ordnance Survey (County Series)
Jenkin, A K H, 1978 "Wendron Tin" Wendron Forge