Engineers develop a laser solution to power plants slowed by slagging

Quietly, and with little of the fanfare accompanying the relentless surge in gasoline costs, the price of coal has doubled in less than a year.

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<p><a href="http://www.physorg.com/news140185391.html">Engineers develop a laser solution to power plants slowed by slagging</a></p> <p>Quietly, and with little of the fanfare accompanying the relentless surge in gasoline costs, the price of coal has doubled in less than a year.</p>