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Published August 18, 2010, 06:27 PM

I-29 in SD reopened after chemical incident

Authorities have reopened an 11-mile stretch of Interstate 29 in northeast South Dakota that was closed after a man was found dead in a car marked with signs indicating a poisonous gas.

WILMOT, S.D. (AP) - Authorities have reopened an 11-mile stretch of Interstate 29 in northeast South Dakota that was closed after a man was found dead in a car marked with signs indicating a poisonous gas.

Watertown Fire Department spokesman Tyler McElhany (MAK'-ehl-ay-nee) says emergency responders were called out Wednesday morning to a report of a car in the area north of Wilmot with a dead person seated inside and the words "hydrogen sulfide" written on signs taped to the windows.

Hydrogen sulfide is poisonous gas that emits fumes smelling like rotten eggs.

McElhany says the department's hazardous materials team is still determining the exact makeup of the chemical substance. Authorities have not released the dead man's name. Northbound and southbound traffic was diverted for hours.

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