Mine Captains
- Richard Trevithick, (father of Richard Trevithick). Constructed the deep adit in 1765 and installed a Newcomen pumping engine in around 1775.
- Andrew Vivian, cousin & collaborator of the younger Richard Trevithick (resigned 1806).
- J. Rule (from 1806).
- William Petherick (died January 1844).
- Charles Thomas (from 1844 to 1867). Instigated the deep mining that discovered large quantities of tin ore.
- Josiah Thomas (from 1867 to 1895). Son of the above, continued his father's development of the mine. In 1876 he introduced boring machines operated by compressed air, and in 1892 the first set of Californian stamps. He was appointed managing director of the mine in 1895, and died in October 1901.
- Arthur Thomas (from 1895 to ?). Son of the above.
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