Man rescued from coal pile in Wisconsin A bulldozer operator was rescued by firefighters after being trapped in a stockpile of coal at Midwest Energy Terminal in Superior, Wis., officials said. SUPERIOR, Wis., March 15 (UPI) -- A bulldozer operator was rescued by firefighters after being trapped in a stockpile of coal at Midwest Energy Terminal in Superior, Wis., officials said. Firefighters were called to the scene Thursday morning after the man accidentally backed into a hole in the stockpile at the Lake Superior coal yard, leaving just the tip of the blade sticking out, the Duluth (Minn.) News Tribune and Superior Telegram reported. Firefighters quickly descended into the hole to free him, the newspapers said. He suffered minor injuries and was taken to a hospital for treatment. Midwest had said earlier in the week it was loading about 58,000 tons of coal Thursday for shipment to Presque Island Power Plant in Michigan, the newspapers said.