Daily Press file photo Department of Natural Resources officials collect fish from the Manistique River for further study during a two-day check for contaminated fish in the river and in Thompson Creek in October of 1984. There were three separate studies being done on the Manistique River at the time, a routine dioxin study, a search for pesticides and a search for organochlorides.

Daily Press file photo

Department of Natural Resources officials collect fish from the Manistique River for further study during a two-day check for contaminated fish in the river and in Thompson Creek in October of 1984. There were three separate studies being done on the Manistique River at the time, a routine dioxin study, a search for pesticides and a search for organochlorides.