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www.reference.com/science/advantages-disadvantages-using-coal-c5258f316d037270

Coal is a cost-effective and reliable form of energy, but there are concerns about the impact that coal has on the environment. It is a fossil fuel that is found in mines in countries around the world, including the United States.

www.reference.com/science/uses-coal-3f97d1cba82de509

According to the World Coal Association, the primary uses of coal are in electricity generation, the creation of liquid fuel, the production of steel and cement manufacturing. There are two primary types of coal, thermal coal and metallurgical coal. Thermal coal goes in...

www.reference.com/article/coal-used-f9c944d246ac99d

The primary use of coal is as a source of energy. Nations around the world use coal to produce electricity. Steel manufacturers also use coal to create a fuel called coke. Coal is formed from plants that were buried in the earth millions of years ago.

www.reference.com/article/coal-made-3f6eda3c4aa295c1

Coal is a sedentary rock that varies in composition. It forms as organic material compressed under the layers of soil and more organic material above it.

www.reference.com/science/hardness-coal-a5a6cb2d312f4943

The most common type of coal is anthracite, which has a hardness of 2.2 when compared to the Moh's scale of mineral hardness, according to the Ted Pella website. However, since coal is not a mineral, it is not officially measured in this way.

www.reference.com/article/coal-form-beebcc88ea79d108

Coal forms from the physical and chemical alteration of organic peat moss. This process, called coalification, takes hundreds of years to complete. During coalification, peat moss undergoes a series of transformations as a result of bacterial decay, compaction, variatio...

www.reference.com/article/coal-found-2b8d736e77c1916f

Coal reserves exist in every country in the world and on every continent except Antarctica. According to the World Coal Association, there are enough coal reserves to meet current demand for 112 years, but only enough oil and gas reserves to meet current demand for the ...

www.reference.com/business-finance/coal-important-6237d077da00cfdc

Coal is important because it is a reliable and an affordable source of energy in many countries. It is responsible for about 40 percent of the electricity generated in the world. Coal is a crucial ingredient in manufacturing industries.

www.reference.com/science/coal-58819419b5ad1d5d

Coal is located in seams within the earth and is brought to the surface by a process known as mining. According to the U.S. Energy Information Administration (EIA), there are around 257 billion recoverable short tons of coal in the U.S. as of 2014.

www.reference.com/article/disadvantages-coal-7d65b36ab64bef71

The primary disadvantages of coal stem from its adverse health and environmental effects. Burning coal produces harmful waste, including carbon dioxide, nitrogen oxides, sulphuric acids and arsenic. Coal-fired power plants are responsible for roughly 24,000 premature de...