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What Is The Primary Source Of Coal

Coal is an abundant natural resource that can be used as a source of energy as a chemical source from which numerous synthetic compounds eg dyes oils waxes pharmaceuticals and pesticides can be derived and in the production of coke for metallurgical processes

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A coal with between 7590 carbon content dry ash free and between 1446 volatiles. A soft coal, often containing substantial admixed sulfur. It is of higher quality than lignite coal but of poorer quality than colour ranges from black to dark brown.

When choosing rock for the top layer choose traffic bound or densegrade gravel This rock has rock dust and smaller pieces of rock added to the mixture This dust forms a cementlike bond when compacted Top layer choices for gravel driveways might include crushed shale

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