Mercury Vapor found at Naval Academy

At least thirty U.S. Naval Academy employees are being tested after Navy officials found mercury vapor levels four times higher than federal health standards in the building where the employees worked.

An inspection of Halligan Hall, which was found to have mercury during renovations in 2006, showed mercury vapor levels between 1,000 and 4,500 nanograms of per cubic meter, while the Centers for Disease Control and Prevention (CDC) standard is 1,000 ng/cubic meter.