GREAT FALLS, Mont. (AP) — A team from the U.S. Environmental Protection Agency and officials with the Montana Department of Livestock are investigating after eight head of cattle were found dead on a ranch near Brady.

Initial tests done on the water the cattle had been drinking showed radiation levels higher than normal. But Richard Graham, a radioenvironmental scientist for the EPA, says subsequent tests of water and soil in the region this week have found nothing abnormal. He says there were no levels high enough to have killed the cows or to pose a hazard to humans.

Graham says now scientists are looking for other sources of radiation, such as any nearby nuclear missiles. Malmstrom Air Force Base in Great Falls maintains nuclear missiles in silos throughout central Montana, but Graham says most of the ones in Pondera County have been removed in the last few years.

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