1. updated details

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  2. added historic Washington state mine site

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  3. added historic Washington state mine site

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  4. added historic Washington state mine site

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  5. updated details

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  7. updated details

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  8. updated details

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  9. added historic Washington state mine site

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  10. added historic Washington state mine site

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  11. updated details

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  12. added historic Washington state mine site

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  13. added historic Washington state mine site

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  14. added historic Washington state mine site

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  15. added historic Washington state mine site

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  16. added historic Washington state mine site

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  17. added historic Washington state mine site

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  18. updated details

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  19. added historic Washington state mine site

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  20. added historic Washington state site

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