DAVID NUNUK / SCIENCE PHOTO LIBRARY DAVID NUNUK / SCIENCE PHOTO LIBRARY
Settling pond reclamation. Pile of overburden (black) in a oil plant's settling pond. The buildings of the oil mine and processing plant are in the background. The settling pond contains tailings, waste from the processing of the oil sands that supply oil to the oil plant. The overburden (the rock that covered the oil-bearing sands) will be spread over the settling pond to reclaim the land. This settling pond is part of the Syncrude processing plant, in the Athabasca Oil Sands, Alberta, Canada.
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