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Norway's carbon tax means it is cheaper for the company involved, Statoil, to extract and bury the CO2 contained in the natural gas than vent it to the atmosphere.
BBC: Whatever happened to carbon capture?
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The most effective way to deal with radon is to fit an air pump to a property to vent the gas into the atmosphere.
BBC: Radon
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Prior to the EPA phase out the economics were not attractive enough to promote wide spread reclamation Despite the fact that it is illegal, many many contractors would and did vent the gas into the air rather then capture and reclaim it because in many cases they would have to pay to get rid of the dirty gas.
FORBES: Money Managers Pick Six Green Stocks for 2013
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So Consol has experience drilling into coal seams to vent and flare gas.
FORBES: With Gas Deal, Consol Strives To Turn Coal Green
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In this configuration, the HTP is passed over a catalyst pack to decompose it into steam and oxygen, but instead of igniting a fuel grain, this superhot gas is allowed simply to vent through the chamber nozzle.
BBC: Science & Environment