What is "gas fires"

Usage examples of "gas fires".

The sky was lit at uneven intervals by waste-gas fires, and the air was foul with the stink of petroleum distillates: aviation kerosene, gasoline, diesel fuel, benzine, nitrogen tetroxide for intercontinental missiles, lubricating oils of various grades, and complex petrochemicals identified only by their alphanumeric prefixes.

Then one young helper carrying a pot of used fat stumbled and the fat sprayed onto one of the gas fires, caught with a whoosh and there was sudden pandemonium.

Here and there cattle were huddled around the natural-gas fires for warmth because the raw wind was up to a steady forty to fifty miles an hour.

One day perhaps they'd replace the open fire, which she loved, and the gas fires in the other rooms, with central heating - if they stayed here long enough, and if they could bear the domestic upheaval.