Top 10 countries with the largest coal reserves in the world 2022
Anthracite – The highest rank, is a hard, brittle, and black lustrous substance. It contains a high percentage of fixed carbon and is mainly used in stoves, furnaces, and water filtration systems. Formation: 300-360 million years old. Bituminous – Middle rank, usually has a high heating (Btu) value and is used in electricity generation and ...