Detroit Free Press | A readiness test: What if oil spewed into Great Lakes? Detroit Free Press ST. IGNACE — Canadian oil transport giant Enbridge, the U.S. Coast Guard and several other federal, state and local agencies took to the waters of the Great Lakes Thursday in boats big and small, testing their preparedness and capabilities to contain ... Mackinac oil won't mix with water - the lifeblood of craft-brew business Crews drill for oil spill in Straits of Mackinac Enbridge Conducts Oil Spill Exercise in Straits of Mackinac |