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September 03, 2015
Output per miner-hour rises as smaller coal mines close
Output per miner-hour rises as smaller coal mines close Coal...
September 02, 2015
Effects of removing U.S. crude export restrictions depe
Effects of removing U.S. crude export restrictions depend on price,...
September 01, 2015
Alaska increases wind power capacity in utility- and di
Alaska increases wind power capacity in utility- and distributed-scale projects...
August 31, 2015