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Opened the Dinas silica brickworks at Penwyllt in 1865; the business had become the Penwyllt Dinas Silica Brick Co. Ltd by 1895.
| Mine | Region | Years |
|---|---|---|
| Penwyllt Quarry | Powys | 1865–? |
Record created: 24 September 2026 · Last researched: 24 September 2026
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