An old lead, zinc, and silver mine, exploited a northeast-trending lode known as the Main Lode in the vicinity north of Bissoe around 1850. Initially worked under the name Wheal Grease according to Dines, it was later referred to as Wheal Baddon on the Ordnance Survey map of 1878-79. Several shafts, including Clemons’s (Hill Brothers) Shaft, opened up the lode along a stretch exceeding 1,000 yards in length. Clemons’s Shaft, also known as ‘Clemow’s Shaft’, is situated approximately 400 yards northwest of Willow Bank. While the northern workings are still somewhat discernible, the southern ones, located south of the Wheal Jane settling ponds dam, are now mostly obscured. Eastern Engine Shaft, indicated by the provided coordinates, marks a large burrow associated with the mine. Over the period from 1850 to 1870, Great Wheal Baddern produced 3,379 tons of 70% lead ore and 41,107 ounces of silver. Additionally, between 1854 and 1857, 1,137 tons of zinc ore were extracted, and from 1852 to 1872, 26 tons of black tin were produced.

1850-1859
3,345 tons lead ore

1848-1853
30 tons black tin