by Keith Matheny, Detroit Free Press
An oil cooling system on the turbine of a southwest Michigan nuclear power plant leaked oil into Lake Michigan for about two months, according to plant officials.
Officials with the Donald C. Cook Nuclear Plant near Bridgman reported the leak to the U.S. Nuclear Regulatory Commission, as well as state and local authorities, on Dec. 20, according to an event notification posted on the NRC's website.
http://www.freep.com/story/news/local/michigan/2015/01/03/nuclear-power-oil-spill-lake-michigan/21215045/