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Acquired Wheal Hermon, Letcha and Progo at St Just in 1924 and let the working of Hermon on option to the Uroz Company, which never produced.
| Mine | Region | Years |
|---|---|---|
| Wheal Hermon | Cornwall | 1924–? |
Record created: 30 September 2026 · Last researched: 30 September 2026
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