State Attorney General Bill Schuette says the “days are numbered” for the oil pipeline which runs under the Straits of Mackinac.
Members of the National Wildlife Federation are calling on oil giant Enbridge to shut down one of its aging pipelines under the Straits.
It pumps 23-million gallons of crude oil and other materials a day from the Upper Peninsula to the lower.
The line is 63 years old, and some say past its expiration date.