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| Symbol | Mn |
|---|
This is a short overview. For the background — history, value over time and notable mines — see Manganese →
A hard, brittle metal essential to steelmaking, added as ferromanganese or spiegeleisen to remove impurities and strengthen the finished metal; also historically used, in oxide form, for bleaching powder and glassmaking.
| Mine | Region | Worked |
|---|---|---|
| Bampfylde Mine | Devon | c.1420-1530 (medieval)–1885 |
| Benallt Mine | Gwynedd | 1886–December 1945 |
| Clive Mine | Shropshire | 17th century–1869 |
| Dry Gill Mine | Cumbria | 1846–1869 |
| Hafotty Manganese Mine | Gwynedd | December 1885–1894 (underground) |
| Higher Pitts Mine | Somerset | 17th century–1893 |
| Lecht Mine | Moray | From 1730–1846 |
| Upton Pyne Manganese Mine | Devon | c.1770–Probably by the mid-1820s |
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