SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Gas pressure dial at a natural gas processing plant. Natural gas is a fossil fuel obtained from underground deposits. At processing plants, it is cleaned and then piped under pressure to power stations, homes and offices to be used as a fuel. This gas processing plant is operated by Orenburggazprom, and is in Orenburg, Russia. Photographed in 2007.
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