Solid, fossil fuel existing of carbonized rests of vegetal origin. Hard coal, brown coal and peat are primary forms of coal, which means the coal is not transformed in coal products, the secondary ...
Shen Yan'an from the University of Science and Technology of China (USTC) has made significant progress in studying the sources and formation mechanisms of haze. Through coal combustion ...
How about if the waste from doing it is dumped straight into mountain streams? Mountaintop removal is a radical form of coal mining in which the tops of mountains are literally blasted off to access ...