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 ...

a pollutant that results from burning fossil fuels such as coal, petroleum and diesel and can cause health issues such as shortness of breath and asthma attacks. The EES Coke and U.S. Steel ...