Does Coal Have a Future?
The History of Coal as a Fuel and its Prospects in the 21st Century Of all the types of hydrocarbons, coal has been in use the longest. China is known to have extracted coal as early as the 4 th century B.C. Unlike oil, coal has historically been used in everyday ... ... coal (this figure has changed by just 3–4 per cent over the past 20 years). Coal is one of the major air pollutants in the European Union. It is no coincidence that almost all the most polluted cities in Europe either consume coal for power-generation ...
22.05.2018