171 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-07-01 18:04:25
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172 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-01-10 17:32:38
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173 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-11-26 10:37:56
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174 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-05-18 14:10:46
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175 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-04-29 17:39:17
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176 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-05-14 17:48:07
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177 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-10-05 11:15:56
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178 | Add to Reading ListSource URL: americanmanufacturing.orgLanguage: English - Date: 2014-04-30 17:24:11
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179 | Add to Reading ListSource URL: americanmanufacturing.orgLanguage: English - Date: 2014-04-30 17:23:47
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180 | Add to Reading ListSource URL: www.ironsmith.ccLanguage: English - Date: 2013-03-25 19:38:36
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