| Coal is a fossil fuel extracted from the ground either by underground mining, open-pit mining or strip mining. It is a readily combustible black or brownish-black sedimentary rock. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •PhysicalEndurant |
| •AmountOfMatter |
| •NaturalResource |
| •FossilFuel |
| •Coal |
| •Substance |
| •NaturalResource |
| •FossilFuel |
| •Coal |