In 1881 the mine, now called Wheal Banns, produced and sold a little bit more than a ton of tin, which required a payment of dues to the Duke of Cornwall.Joseph Henry Collins. Observations on the west of England mining region: being an account of the mineral deposits and economic geology of the region, and forming vol. XIV of the transactions of the Royal Geological Society of Cornwall. Author; 1912 [cited 25 September 2012]. p. 408.Robert Hunt. Memoirs of the Geological Survey of Great Britain and of the Museum of Practical Geology. 1882 [cited 25 September 2012]. p. 8.
