HAMBACH, GERMANY - SEPTEMBER 1: A 4-wheel drive and one of the world's largest excavators (background) digging lignite in of the world's deepest open-pit mines in Hambach on September 1, 2010.
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HAMBACH, GERMANY - SEPTEMBER 1: A 4-wheel drive and one of the world's largest excavators (background) digging lignite in of the world's deepest open-pit mines in Hambach on September 1, 2010.