Construction of the first commercial coal liquefaction demonstration plant has now commenced.

世界上首家煤炭直接液化工业性示范厂也已开工建设。

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In 2009, Huaibei Coal Mining management effectiveness obviously, the first commercial coal quality and to achieve "zero-tolerance" and "zero payment.

2009年，淮北矿业煤质管理成效明显，商品煤质量首次实现“零超差”、“零赔付”。

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Accounting of the moisture content in the commercial coal is a base for net weight conversion of coal, which is stipulated in the contract generally.

计量水分是商品煤毛量折算净量的依据。一般，在合同中都有规定。

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India banned commercial coal mining by private companies in the 70s when it nationalized all mines.

WSJ: India Panel: Cancel All Coal Permits From 1993 to 2010

The proposal lumps gas turbines and coal boilers into the same source category, and it holds coal power plants to a CO2 performance standard that nearly all natural gas combined cycle plants and exactly zero commercial coal power plants can meet.

FORBES: EPA Nominee Gina McCarthy Has A History Of Misleading Congress

Ohio-based American Electric Power, the largest consumer of coal in the U.S., is trying to build the country's first super-efficient commercial-scale coal gasification plant.

FORBES: Magazine Article