They burned some coal.

They are loading coal into a ship now.

Petroleum was replacing coal as fuel.

Petroleum priced coal out of the energy market in Japan.

They substituted coal for oil.

Coal is not always black.

If we burn fuels such as coal, oil and gas, they give off various gases.

Coal consists mostly of carbon.

Coal is chemically allied to diamonds.

The coal is burning.

The coals are burning red.

The coal was glowing in the fire.

We have used up the coal.

I marveled at seeing the Chinese people burning coal.

We have used up the coal.

Last year's output of coal fell short of the standard.

Factories have been urged to switch from coal to a cleaner fuel.

A crow is as black as coal.

We have used our ration of coal for the week.

The vessel was loaded with coal, lumber, and so on.