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process required to extract river pebble from opencast
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process required to extract river pebble from opencast

Dec 02, 2020 The Corps deemed PLP’s final proposal “noncompliant” with the requirements of the Clean Water Act—one of the few times the agency has rejected a major resource extraction project in Alaska. The Pebble Mine was slated for a largely undeveloped swath of wilderness near Bristol Bay, a watershed that supports one of the world’s most ...

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