We1 then see the necessity of supplying fuel in a state of combustion, especially when' fresh coal is put on the fire with a plentiful supply of oxygen. As the atmosphere is composed of 21 volumes ...

The fuels (wood and coal) employed to produce artificial heat, require exposure to a high temperature before they will burn, hence they are not subject to spontaneous combustion; that is ...

Through coal combustion experiments and high-precision sulfur isotope analysis, the researchers drew the conclusion that particulate matter from coal combustion is one of the main sources of haze ...