11. The sting of tear gas filled the air. 12. The specimen also had gas filled floats called pneumatocysts, bladder like structures located near the lamina. 13. Poison gas filled a coal mine in southern China, killing 18 miners, an official said Thursday. 14. A potent smell of gas filled the area. 15. The gas filled the front car and spread to other stations where the train had stopped. 16. Riot squads and dockworkers clashed at the port; rocks, rubber bullets and tear gas filled the air. 17. The gas filled the tunnel, killing nine. 18. Determining the true porosity of a gas filled formation has always been a problem in the oil industry. 19. C, through a gas filled piston. 20. Two coal miners suffocated after methane gas filled a mine shaft in southwestern Baluchistan province, a doctor said Sunday.
