Question

What is the difference between 3 types of coals?
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Answer 1

Answer:

Lignite is a soft brown coal that still contains a high amount of water. ... The difference is that sub-bituminous is the transition stage from lignite to bituminous coal. Bituminous coal is widely used in the United States and across Europe. Anthracite coal is a metamorphic rock and is considered the highest grade coal.