Manhattan Project

The Missouri Independent, MuckRock and The Associated Press spent months combing through thousands of pages of previously-unreleased government records that show radioactive waste was known to pose a threat to people living near Coldwater Creek as early as 1949. But federal officials repeatedly wrote potential risks off as ‘slight,’ ‘minimal’ or ‘low-level.’

Mary Oscko died last month of cancer.

The U.S. Army Corps of Engineers is close to finishing its removal of World War II-era radioactive waste from the Mallinckrodt Pharmaceuticals plant in…

During World War II, a St. Louis-based company took on a project that turned out to be detrimental to the health of its employees.Mallinckrodt Chemical…