There have been a number of small mines on the towans, the most westerly was Wheal Lucy on the Black Cliff () and now built over with chalets. The sett was known as Riviere Consols or Riviere Mine and adits were driven inland from the cliff and the Carbona Lode was worked over 70 fathoms. A 4 fathom shaft was sunk on the lode and a ″rock of tin weighing 7 cwt″ was said to have been raised. The mine was abandoned because of a lack of funds to purchase an engine. A new company was formed In 1871 and the sett renamed Wheal Lucy, after the daughter of Canon Hockin who owned the mineral rights. Over £5,000 was spent on machinery and dressing floors and £765 worth of tin was sold in the early months of the mine. The mine closed in 1874 having returned 14 tons of black tin for £1,202. The mine was reworked from 1893–96, at a time when the price of tin was low and another heavy loss was made.