gjaehnig@mininggazette.com LANSING — Since she took office in 2019, Gretchen Whitmer has made it among her priorities to stop the use of Line 5 for the transportation of petroleum-based products through the Straits of Mackinac. Enbridge Energy’s Line 5 pipeline was built in 1953, and extends for 645 miles across the state of Michigan. Line 5, which is part of Enbridge’s Lakehead System, begins in Superior, Wisconsin, and ends in Sarnia, Canada. The state of Michigan granted the request of Enbridge, a $125-billion Alberta, Canada-based oil transport company, for a right-of-way to build,...