Coal is ranked based on the amount of heat and pressure that has acted upon it over the years. Mainly, coal is classified into four types: Anthracite, Bituminous, Subbituminous, and Lignite.
The coal industry continues to be one of the world’s largest suppliers of energy. In the United States alone, about half a billion short tons of coal are converted to energy every year.
The company produces electricity from bituminous coal, anthracite coal, liquefied natural gas, solar, heavy oil, hydro, and wind sources. It owns and operates steam, internal combustion and combined ...
This file photo shows environmentalists from different climate activist organisations displaying placards during a briefing in Manila. The group was calling for the reduction of coal-fired power ...