In this case coal in a finely divided form is led from a hopper along pipes in which it is heated and when mixed with air gives an explosive mixture.

When Coal First Arrived, Americans Said ‘No Thanks’ Back in the 19th century, coal was the nation’s newfangled fuel source—and it faced the same resistance as wind and solar today ...

Even as President Trump vows to reinvigorate America's coal industry, critics say his administration has stripped away key health protections for miners.

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By distilling bituminous coal in retorts to obtain gas for illumination, or by burning it in kilns or pits, the residue left behind is called coke, which is simply coal charcoal, and is nearly ...

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It is important to explore the changes in coal pores in response to triaxial compression and shear deformation for coal mine gas drainage and efficient coalbed methane mining. To study the variation ...