Situated in the valley southwest of Haye Mill, which operated at least two NS-trending lodes. Referred to alternatively as Coombelawn Mine or Smith’s Venture, it was initially established before 1825 but had to be abandoned that year due to the death of most of its investors. Around 1845, it was reworked and included Wheal Elizabeth, another small operation likely located slightly downstream.

The mine underwent further reworkings, operating as West Wheal Callington in 1851-1852 and as Haye Valley Mine in 1862-1864 and 1870-1874. During the latter periods, it primarily produced black tin, with most of it extracted from alluvial workings. The mine was known to have two lodes: one carrying galena that transitioned to copper ores at depth, and the other containing sphalerite impregnated with copper ores. These lodes were accessed via two shafts, one on each side of the valley, and an adit driven into the eastern slope.

When the mine was abandoned in 1825, the workings reached a depth of 21 fathoms below adit. The grid reference provided marks the approximate location of the more northerly shaft. During the years 1862-1864 and 1870-1874, Haye Valley Mine produced 25 tons of black tin, although the output of earlier workings is not recorded.

<1825 1845-1849