1. The park was established on land formerly occupied by a tailings pond . 2. Opponents fear that a tailings pond could fail and contaminate streams. 3. In May 2008, tailings ponds covered approximately 130 km2 of Alberta. 4. Opponents fear a tailings pond could fail and contaminate streams. 5. By 2009, Suncor was working to reduce the amount of bitumen entering tailings ponds . 6. Panna Maria residents living near the tailings pond claimed increases in cancer and birth defects. 7. After sand mining operations ceased, the tailings ponds were all that remained of the mining operation. 8. So Dawn began pumping the contaminated groundwater, and dumping it in the largely empty tailings pond . 9. These powerful oxidative reagents can potentially remove enduring toxins from tailings ponds or waste water in cities. 10. The ruins are surrounded by the tailings pond of the former United Verde copper mine at Jerome.
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