1 | Add to Reading ListSource URL: www.rocklinhistory.orgLanguage: English - Date: 2016-08-16 09:07:27
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2 | Add to Reading ListSource URL: www.leadvilleraceseries.comLanguage: English - Date: 2016-06-02 12:51:28
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3 | Add to Reading ListSource URL: www.idahomuseum.orgLanguage: English - Date: 2014-05-07 13:03:02
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4 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-11-14 00:47:58
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5 | Add to Reading ListSource URL: www.msha.govLanguage: English - Date: 2014-10-21 16:25:28
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6 | Add to Reading ListSource URL: www.msha.govLanguage: English - Date: 2014-09-25 17:26:36
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7 | Add to Reading ListSource URL: www.emnrd.state.nm.usLanguage: English - Date: 2013-07-30 18:06:10
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8 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-12-01 06:28:52
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9 | Add to Reading ListSource URL: hewit.unco.eduLanguage: English - Date: 2006-08-08 15:47:06
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