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Aerial Map

2014

2009

2004

1999

1993

1982

1978

1970

1930

1917

The site was listed on the Superfund National Priority List

Nyanza closed down due to financial problems

Initial discovery contamination of Sudbury River

Nyanza Color & Chemical Co. merged with US Color & Chemical Co., expanding its dyestuff and textile chemical business on the site

US Color & Chemical Co. established labs and factories on the site