SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Gas compressor servicing. Engineers checking a compressor at a petrochemical factory. Compressors are usually used to compress gases, such as natural gas for transportation, or coolant gases for a cooling system. This is the Kirishinefteorgsintez (KINEF) petrochemical factory. Photographed in 2006, in Kirishi, in the St Petersburg region of Russia.
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