- Updated almost 4 years ago • Last indexed 20 minutes agoAverage Coal Quality At Utah Mines T2.24 2004
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- Updated almost 4 years ago • Last indexed 20 minutes agoAverage Coal Quality At Utah Mines T2.24 2006
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- Updated almost 4 years ago • Last indexed 20 minutes agoAverage Coal Quality At Utah Mines T2.24 2011
- Updated almost 4 years ago • Last indexed 20 minutes agoAverage Coal Quality at Utah Mines T2.24 2012
- Updated almost 4 years ago • Last indexed 20 minutes agoAverage Coal Quality At Utah Mines T2.24 2013