As far as I can remember:-
Tresavean and United had double rodders and the single rodders were at Caradon, Mary Ann, Consols, Cooks Kitchen, Dolcoath, Fowey Consols, Levant and possibly Carn Brea. (or was that the one they only got as far as cutting the balance box pit for?)
I'm pretty sure Consols man engine ran directly off the nose of an ex-pumping engine.