71 | Add to Reading ListSource URL: www.nationalcoalcouncil.orgLanguage: English - Date: 2008-02-13 00:10:41
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72 | Add to Reading ListSource URL: www.coalresearchforum.orgLanguage: English - Date: 2011-02-02 11:07:58
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73 | Add to Reading ListSource URL: www.coalresearchforum.orgLanguage: English - Date: 2010-05-27 07:56:53
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74 | Add to Reading ListSource URL: www.coalassociation.orgLanguage: English - Date: 2007-03-29 16:44:00
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75 | Add to Reading ListSource URL: www.chichilnisky.comLanguage: English - Date: 2013-05-20 13:58:09
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76 | Add to Reading ListSource URL: www.nationalcoalcouncil.orgLanguage: English - Date: 2015-04-30 00:31:55
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77 | Add to Reading ListSource URL: www.coalassociation.orgLanguage: English - Date: 2005-10-28 07:57:00
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78 | Add to Reading ListSource URL: www.coalassociation.orgLanguage: English - Date: 2007-09-19 22:25:00
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79 | Add to Reading ListSource URL: www.coalassociation.orgLanguage: English - Date: 2005-10-28 07:58:00
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80 | Add to Reading ListSource URL: www.coalassociation.orgLanguage: English - Date: 2009-10-21 23:10:00
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