Coal - 11 of 10

Coal FAQs - 10 Found

Load first FAQ in this category.

PREV

NEXT

Load last FAQ in this category.
What is coal?

Coal is a sedimentary rock made predominantly of carbon that can be burned for fuel. Coal is readily combustible, black or brownish-black, and has a composition that, including inherent moisture, consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material. It is formed from plant remains that have been compacted, hardened, chemically altered, and metamorphosed by heat and pressure over geologic time.

Tags: Energy, Mining, Geologic Time, Coal