COPPER MINE PROPRIETORS

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1840

W. M. Buckingham (Agent & Managing Proprietor - Gwernor Copper Mine Company) - Office Uxbridge Square
Joseph Jones (Managing Proprietor - Llanberis, Drwsycoed & Simdde Dylluan Copper Mine Company) - Segontium Terrace

1868

_____ Edwards (Manager) - Drws y Coed Copper Co. Nantlle
William Sandoe (Manager) - Symdde Dylluan Copper Co. Nantlle

1874

Thomas Lewis (Agent - Drwsycoed Copper Co., Nantlle) - Slate Quay
John Roberts (Manager - Symdde Dylluan Copper Co., Nantlle)
Owen Roberts (Manager - Drwsycoed Copper Co., Nantlle) - Slate Quay

1876

Thomas Lewis (Agent - Drwsycoed Copper Co., Nantlle) - Slate Quay
John Roberts (Manager - Symdde Dylluan Copper Co., Nantlle)
Owen Roberts (Manager - Drwsycoed Copper Co., Nantlle) - Slate Quay

1878

(Cassey)
Thomas Lewis (Agent - Drwsycoed Copper Co., Nantlle) - Slate Quay
John Roberts (Manager - Symdde Dylluan Copper Co., Nantlle)
Owen Roberts (Manager - Drwsycoed Copper Co., Nantlle) - Slate Quay