1. They contrived a mask against poison gas.

2. There are reports that poison gas is being used against the rebels.

3. Poison gas blew off and endangered the lives of hundreds of persons.

4. At the time, however, I feared poison gas.

5. A heavy overcast like a poison gas cloud was stationary over the battered city.

6. Poison gas was used, in flagrant disregard of the Geneva Convention.

7. There was fear of poison gas, in a nation where Zyklon-B was part of the collective memory.

8. Whether it's against poison gas or pollution or radiation he can't say.

9. Bombs and poison gas would rain down on undefended cities.

10. The report contained details of the poison gas and cited examples of accidents involving it.

11. This gas mask can immunize you against poison gas.

12. The poison gas thickened as the terrible night advanced.

13. Poison gas has been around since the Second Battle of Ypres.

14. The poison gas blew off from the pipe and endangered the lives of about hundreds.

15. Will some poison gas,() waste water or solid waste be released from your project?

16. The enemy went so far as to use poison gas.

17. Traditional assessment methods of poison gas leakage under earthquake and their shortcoming are briefly discussed.

18. His plan was to introduce poison gas into ventilation system in the bunker in Berlin during a full-dress military conference.

19. Neither armies, nor warships, nor military aircraft, nor poison gas will then be needed.

20. The paper analyzes the factors effecting on poison gas diffusion, including gaseous diffusion models, types of leakage source, geographic setting, weather factors and gas properties.

21. It's a land where doom hangs upon the air like poison gas.

22. If this emission takes place it triggers the breaking of a vial of poison gas which instantaneously kills the cat.

23. The helicopters, some American officials later surmised, were used to spray poison gas on the Kurds.

1. They contrived a mask against poison gas.

2. Poison gas blew off and endangered the lives of hundreds of persons.