Analysis of information sources in references of the Wikipedia article "St Ives, Cornwall" in English language version.
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An old copper mine, which probably was first worked in the 18th century, when an adit was driven westwards under St Ives town from Pedn Olva Point. In 1822-23, the driving of the adit was resumed, and a shaft and several winzes were sunk. At a distance of 95 fms from its mouth, the adit intersected with a lode that was believed to be one of the St Ives Consols lode. In 1859, the North Wheal Providence Mining Company was formed to work the property, and "Old Wheal Trenwith", the eastern section of Wheal Trenwith, was included with the sett. An engine shaft was sunk, and a cross-cut was commenced from adit level to connect with the Wheal Trenwith lode, but this was still not completed when the company ran out of money in 1861. In 1862, a limited company was formed to work the property, but this was started to wind up in 1863 and liquidated until 1873. When the working of Wheal Trenwith was resumed by St Ives Consolidated Mines, the Pedn Olva adit was explored, but no further development was carried out. The engine house, which once stood on top of the cliff at Pedn Olva Point, was demolished in the early 20th century. Its staircase was incorporated in the Pednolva Hotel, which now occupies its site.
