Explanation:

Coal is one of the important minerals which is used in the generation of thermal power and smelting of iron ore. It is one of the most mined minerals from the earth. Of the three fossil fuels (petroleum, natural gas, and coal), coal has the most widely distributed reserves; coal is mined in over 100 countries, and on all continents except Antarctica. The largest proved reserves are found in the United States, Russia, China, Australia, and India.