Stock Photo - Ferruginous mine water being conditioned at the Vattenfall GmbH Mine Water Treatment Facility Tzschelln in Boxberg, Germany, 14 March 2016. Seven mine water treatment facilities filter nearly 100 percent of the iron hydroxide of the rising mine water, allowing 400 million cubic meters of clear water to enter the Spree river and other waters annually. PHOTO: ARNO BURGI/dpa | usage worldwide. - Boxberg/Saxony/Germany

Stock Photo: Ferruginous mine water being conditioned at the Vattenfall GmbH Mine Water Treatment Facility Tzschelln in Boxberg, Germany, 14 March 2016.

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