This is raw coal that is used for heating and cooking. It is used at all times of the year. Raw coal is known to cause much more pollution than coal that is burned with a control on the pollutants it causes as is used in some factories with a filtering system and scrubber. The amount of raw coal burned would be hard to calculate but with so many households and businesses using it the pollution caused by this energy source must be tremendous.

Jishou City, Hunan, China