coal
coal
Peat Lignite Bitumen Anthracite
Anthracite coal is harder than Lignite.
peat, lignite, bituminous, anthracite.
Peat, Lignite and Anthracite.
peat, lignite, bituminouse, anthracite....
peat, lignite, bituminouse, anthracite....
Peat is decayed vegetation probably thousands of years old but which has not been converted to coal. Lignite is called brown coal, again vegetable matter that has not become true coal. Anthracite is a very pure form of coal much valued for steam engines.
ANTHRACITE bitumminous coal LIGNITE PEAT
lignite, sub-bituminous, bituminous and anthracite.
lignite, sub-bituminous, bituminous and anthracite.
Peat is decayed vegetation probably thousands of years old but which has not been converted to coal. Lignite is called brown coal, again vegetable matter that has not become true coal. Anthracite is a very pure form of coal much valued for steam engines.