Anthracite

Different Types of Coal

Different Types of Coal
Coal is a combustible organic rock which is primarily made of carbon, nitrogen and oxygen. It is mainly classified into different ranks or grades, based on the percentage of carbon in it.

Most Searched in Society and Culture Most Searched in Entertainment and Music
Most Searched in Games and Recreation Most Searched in Home and Garden
Homicide vs Manslaughter
Android 4.1 vs Android 4.2
Rice Bran vs Rice Husk
Micromax A116 Canvas HD vs Samsung Galaxy Grand