It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal.

Anthracite coal

Anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.

Due to its high carbon content Anthracite is used primarily in the Steel and Ferro Alloy/Chrome industries as a redactant. Moreover, because of various other characteristics that Anthracite possesses it is consumed in a wide array of industries ranging from Soda Ash production to Titanium Dioxide production to water/pipe purification systems.

Similar to Crude Oil, Anthracite is a commodity which is applied to most things which we encounter daily, and is a driving force of industry that cannot be replaced.