Could anyone tell me when Wheal Harriet was first opened? I understand there is some ambiguity as to the date and it has in the past been confused with another Wheal Harriet, (around St Agnes area I believe). I am keen to know if it started in the mid to late 1820's. I am paticularly interested in who it is named after. Lord De Dunstanville married his second wife, Harriet Lemon, in 1824 and I imagine the mine was so named after her. The only other Harriet linked to the Basset family is Rebecca Harriet Buller Trelawney who was the wife of the last Basset, Arthur. They married in 1898 so this seems far too late. Any info on dates for both Wheal Harriet and Harriet's shaft would be interesting!