Growing environmental objections to exporting coal from Washington state and Oregon have begun to endanger the coal industry’s hope to restore its flagging fortunes by shipping much more of the embattled fossil fuel to China and India.

Port officials recently dropped plans for a terminal in Coos Bay, Ore., just days after the governors of Oregon and Washington urged the White House to scrutinize the global impact of greenhouse gas emissions in Asia before approving exports from Northwest ports.

The Coos Bay cancellation follows last year’s abandonment of a proposed coal storage and export facility in Grays Harbor, Wash. And the Sierra Club announced plans this week to sue over alleged water contamination from trains spilling coal dust and fragments. That could further complicate matters for advocates of shipping coal by rail to U.S. Northwest ports for export to the Far East.

The challenges mean the four remaining proposed Northwest coal terminals could face delays or denial of permit applications, according to Kevin Book, an analyst at Washington-based ClearView Energy Partners.

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