Work is to begin in mid-August on a $3.4-billion, 1,000-mile crude-oil pipeline from northern Canada to Superior, Wis., says Canadian owner Enbridge Inc., Edmonton, Alberta. Enbridge is burying a 36-in. pipe that will carry 450,000 barrels of crude oil daily, with a 326-mile U.S. route running from North Dakota to Wisconsin. The project will run parallel to another 20-in. pipeline that was constructed in 2009. The project was awarded to U.S. Pipeline, Houston, and Precision Pipeline of Wisconsin.