| Entry Type | Person |
| Surname | Trethewy |
| Forenames | Samuel |
| Epithet | Cornish mining engineer; supervised works at High Rake and Watergrove Mines, Derbyshire. |
| Dates | fl 1843 |
| Authorised Form of Name | Trethewy; Samuel (fl 1843); Cornish mining engineer; supervised works at High Rake and Watergrove Mines, Derbyshire. |
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