Anthracite, as long as it has low ash and sulfur content
Anthracite can be the cleanest of coals if it has a low ash and sulfur content.
The type of coal that burns the most efficiently is anthracite coal.
The type that burns.
Anthracite
Natural gas is the cleanest burning of the fossil fuels (coal, oil and natural gas).
COAL
Anthracite can be the cleanest of coals if it has a low ash and sulfur content.
The type of coal that burns the most efficiently is anthracite coal.
The type that burns.
Anthracite
Natual gas is the cleanest burning fossil fuel.
Its the dirtiest
Coal is the dirties nonrenewable energy source
Lignite.
coal
egg rolls
Natural gas is the cleanest burning of the fossil fuels (coal, oil and natural gas).