Bosorne and Ballowal United / Bellan Mine, Cornwall
The Bosorne & Ballowal United / Bellan Mine is thought to date from about 1820. At some stage later North and East Wheal Venton mines were incorporated into the mine. Production in its early years seem to have been quite patchy as there are reports of the mine re-opening in 1824, for sale in 1825, worked during the 1830's and re-opened in 1850. There was a 15-inch pumping engine at the mine but its location is unknown as well as a large waterwheel. Its most productive year for Black Tin was in 1854 when it produced 10.90 tons with a value of £714.
The mine was also active during the 1940s with some of the modern remains dating from that period.