The Globe and Mail reports in its Friday edition that Westshore Terminals Investment is urging Ottawa to maintain the flow of imports of thermal coal by train from U.S. mines. The Globe's Brent Jang writes that Westshore, controlled by B.C. billionaire Jim Pattison, is upset that B.C. Premier Christy Clark has asked Prime Minister Justin Trudeau to ban exports of thermal coal crossing the border for shipment from B.C. ports. Thermal coal is used to fuel plants that generate electricity. That type of coal is "filthy" and bad for the environment, Ms. Clark said Wednesday morning while campaigning for the May 9 provincial election. Westshore's share price fell $3.08 Wednesday to close at $23.03. In her letter to Mr. Trudeau, Ms. Clark linked her request to the Trump administration's decision earlier this week to slap countervailing duties on Canadian lumber exports south of the border. "We are deeply disappointed to see the Premier of British Columbia's call to close our borders to our long-term U.S. customers," according to Westshore's letter sent late Wednesday to Mr. Trudeau. "On average, one-third of Westshore's business is directly attributable to the coal we handle for our U.S. customers."