| 21. | Lead mining increased, with output almost doubling between 1300 and 1500.
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| 22. | Other early industries included West Fedw, a now disused lead mine.
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| 23. | The gold soon ran out and deep lead mining started in 1858.
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| 24. | Keno was also known for its silver and lead mining.
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| 25. | The trail continued westward through the Little River area to the Lead Mines.
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| 26. | A zinc and lead mine also operated in the area into the 1970s.
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| 27. | Lead mining was once the main industry in Wharfedale.
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| 28. | Zinc and lead mining were in heavy production through the 1820s 1920s.
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| 29. | Lead mined at Strontian was used in bullets manufactured for the Napoleonic Wars.
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| 30. | Dr Rieuwerts has provided a comprehensive gazetteer of the Derbyshire lead mining soughs.
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