Coalbed methane grew out of venting methane from coal seams. Fire suppression design features included pressurised stairwells, smoke venting and fire retardant floor barriers. Some hibachi designs have venting systems for heat control. There may be valves allowing venting of gas from the loop. Selkirk has a plant which makes chimney, venting and air distribution products. Another hypothesis involves ocean venting of hydrogen sulfide gas. Leaving the toilet lid open will reverse the flow of the venting of the tank. The station's existing chimneys would be utilised for venting steam. Production industries are venting smoke and discharging chemicals that are polluting water resources. Furthermore, US and Soviet underground testing continued "venting" radioactive gas into the atmosphere. Fireman knock-out glazing panels are often required for venting and emergency access from the exterior. This venting thrust easily exceeded aerodynamic drag. The technique involves simultaneously venting the loop and injecting diluent. Sunder starts cursing his stars and venting his anger. Containers must allow venting of oxygen produced by decomposition over time, otherwise they may burst.