Coal: Origin, Types, Energy, Formula, Rock, Constituents and Uses

In this article we will discuss about:- 1. Introduction to Coal 2. Origin of Coal 3. Ranking of Coal 4. Bended Constituents of Coal 5. Coal Analysis and Commercial Grades 6. Coking Coal 7. Coal Washing 8. Production of Petrol from Coal 9. Uses of Coal. Contents: Introduction to Coal Origin of Coal Ranking of Coal Bended Constituents of Coal  [...]