CAMERON — The Environmental Protection Agency said sludge has been unearthed in its latest effort at finding the cause of numerous brain tumors near Cameron.
EPA coordinator Don Lininger on Tuesday said gray sludge was found in one of two trenches that crews dug at the former Rockwool Industries site. Lininger said the excavation was based on a report that "sludge-like material" was found during a utility project several years ago.
Tests on the sludge are expected to be completed in about three weeks.
Earlier soil and water testing at the site failed to uncover a link to the tumors.
Several tests have been done on soil and water in and around the northwest Missouri town because of residents' concerns about a rise in brain tumor cases in the area. None of the tests have revealed levels of toxic substances exceeding government standards.