New Alberta government research has found windblown dust from mountaintop removal coal mines has polluted a pristine alpine lake to the point where its waters are as contaminated as lakes downwind from the oilsands. coalmines coal abpoli
The paper, published last week in the journal Environmental Science and Technology, concludes that it's crucial to consider more than just downstream effects from such mines.
The province's new energy minister, Peter Guthrie, has not responded to questions from The Canadian Press on the issue. The pace of contamination quickened after 1970, when aboveground mining in the Elk Valley began. Polycyclic aromatic compounds doubled in concentration in Window Lake every 10 to 15 years after that.
The researchers compared the compounds found in the lake sediments to similar ones generated by wildfires and from the Elk Valley mines. Those from the lake sediments matched those from the mines. Emily Bernhardt, a prominent ecologist at Duke University in North Carolina who has published extensively on mountaintop coal mining, called the new research both groundbreaking and convincing.
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