Pebble Limited Partnership  CEO John Shively knew he was taking on a tough crowd at Wednesday's Northwest Fisheries Association membership meeting in Seattle, and he tried to lighten the mood.

"I have some friends in the fishing industry," he said at the event, attended by IntraFish. "I think they're still my friends."

It wasn't long, however, before the roomful of critics of the potential copper, gold and molybdenum mine near Bristol Bay began firing questions at the CEO.

Shively's timing was bold: He came to Seattle just days after US Senator Maria Cantwell of Washington state wrote a letter to US Securities and Exchange Commission (SEC) Chairman Elisse Walter blasting a report from Northern Dynasty Minerals, which owns 50 percent of the Pebble Limited Partnership (PLP).

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