A leak at a nuclear power plant went undetected for weeks, allowing up to 2,000 gallons of oil to flow into Lake Michigan.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nuclear-power-plant-leaked-oil-lake-michigan-2-months-straight
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/huffington-post-0
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hazardous-waste
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nuclear-wastes
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment