SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Blast furnace for steel production. Molten metal (yellow) is flowing from the blast furnace, a structure designed to heat the metal ore with air to separated the ore into the metal and waste products. The heat is above the melting point of the metal, allowing it flow out in the molten state seen here. Photograped in 2003, at the Novolipetsk Steel facility in Lipetsk, Russia.
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