coal

I put more coal on the fire.

Coal gas rivaled smoky oil lamps and flickering candles, and early in the new century, well-to-do Londoners grew accustomed to gaslit houses and even streets.

The ready availability of coal inspired William Murdoch during the 1790s to develop the first new form of nighttime illumination to be discovered in a millennium and a half.

In view of their later start and their lack of coal—undoubtedly the main reason they were not among the early industrializers—it is important to understand the sources of their success.

It was there that coal’s potential wad enormous.

Coal was not used, however, to produce mechanical energy or to power machinery.

Coal was first used in Britain in the late Middle Ages as a source of heat.

As this early energy crisis grew worse, Britain looked toward its abundant and widely scattered reserves of coal as an alternative to its vanishing wood.

It's in fact the burning of what we call "fossil carbon" that creates the imbalance: fossil fuels, coal, oil, natural gas.

Unlike coal, the volume of which can be accurately estimated, the volume of undiscovered oil can only be guessed at.

And soon after a process was demonstrated where a combination of coal, sulfur and other cheap, commonplace substances were heated,

Um, last time we finished up the section of coal, so we have just two fossil fuels left to talk about.

A hot coal fell out of the fire and burnt the carpet.