The most abundant type of coal in the United States is the bituminous coal. It accounts for about 45% of the total coal production in the United States
Coal is one of the fossil fuels that is primary used for energy production.
Some power plants are operated using coal as their fuel source.
Coal produced in shallow swamps in which plant materials are suddenly buried in an environment that lacks oxygen.
With burial and maturity, coal attains different levels.
It goes from Peat to Lignite to Sub-bituminous to Bituminous to Anthracite coal.
