And, slowly, after millions of years, as the choking gases drew back into the ground, green returned to planet Earth.

But when they did, they were met by a curtain of stinging, choking gas.

Then the choking gases began to filter down into the con- tainer.

Breaching a large chlorine tank would release clouds of choking gas, experts say.

Mr. Damon opened the shop door, and was met by such an outward rush of choking gas that he staggered back.

Conduits, which could be flooded without warning, or filled with scalding steam or choking gas.

When ignited, the materials gave off dense clouds of choking gases which killed 20 Roman soldiers in a matter of 2 minutes.

Choking gases from the cannon breech, garbled orders and warnings from the radio.

And then Tom smelled a strange odor--an odor of a choking gas that seemed to smother him.

In its first appearance, Batman's utility belt "contain[ed] choking gas capsules."

The guns were fired using black powder rather than smokeless powder, producing choking gas in the confined firing spaces that spread throughout the fort.

Riot policemen, under instructions to avoid the use of tear gas as much as possible, threw rocks back at students before resorting to the stinging, choking gas.

Chlorine has something of a checkered career, including use in World War I as a choking gas and as part of the more lethal mustard and phosgene gases.

He allowed himself to be carried along with the flow of the moving mass of marchers and spectators up Sixty-fourth Street, away from the Avenue and the choking gas.

As Panamanian politicians were beginning their introductions of Mr. Bush, the police fired canisters of a choking gas at the demonstrators, and a breeze carried clouds of the gas into the plaza.

Soon after the troops halted the march with clouds of choking gas, some of the protesters, chanting "Noriega Must Go" and "Justice, Justice," hurled rocks and led soldiers on chases down side streets.

These were the evil places of the mountainscape, crawling with beetles and maggots, writhing with rat swarms, and made all the more awful by the stench of the skaven and pockets of choking gas.

Only by stepping up the toughness and strength of that metal, by increasing its electronic tension, could it be made to withstand the weight of thousands of miles of swirling, choking gases that made up the atmosphere.

Behind him he could hear the sounds of surprise as the CS gas rose to face level, followed by the sounds of fear and panic as the smoke and choking gas swept over the crowd on the sidewalk and up to the reviewing stands.

Alongside Kane and Finger, Fox contributed to the evolution of the character, including the character's first use of his utility belt, which "contain[ed] choking gas capsules," as well as writing the first usages of both the Batarang and the Batgyro (an autogyro precursor to the Batcopter) two issues later.