Pebble Limited Partnership

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FILE - In this July 13, 2007 file photo, workers with the Pebble Mine project test drill in the Bristol Bay region of Alaska near the village of Iliamma. The Trump administration settled a lawsuit Friday, May 12, 2017, over the proposed development of a massive gold and copper mine at the headwaters of one of Alaska's premier salmon fisheries. The Environmental Protection Agency settled the long-running case with the Pebble Limited Partnership, agreeing to allow the Canadian-owned company to seek a federal permit to build its mine near Bristol Bay. (AP Photo/Al Grillo, File)