51 | Add to Reading ListSource URL: www.surface-mining.state.al.usLanguage: English - Date: 2010-07-08 17:12:56
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52 | Add to Reading ListSource URL: candocanal.orgLanguage: English - Date: 2012-01-03 21:33:27
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53 | Add to Reading ListSource URL: www.fsd.bc.caLanguage: English - Date: 2014-08-21 14:11:51
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54 | Add to Reading ListSource URL: coal.jogmec.go.jpLanguage: Japanese - Date: 2018-08-12 22:38:46
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55 | Add to Reading ListSource URL: www.ceri.caLanguage: English - Date: 2018-02-21 12:52:47
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56 | Add to Reading ListSource URL: www.hansenbailey.com.auLanguage: English - Date: 2015-09-21 04:09:22
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57 | Add to Reading ListSource URL: www.hansenbailey.com.auLanguage: English - Date: 2015-09-21 04:34:52
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58 | Add to Reading ListSource URL: www.densona.comLanguage: English - Date: 2018-08-06 16:40:55
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59 | Add to Reading ListSource URL: www.coalashfacts.orgLanguage: English - Date: 2017-08-08 07:40:55
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60 | Add to Reading ListSource URL: www.jogmec.go.jpLanguage: English - Date: 2018-06-21 05:30:32
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