CHEYENNE, Wyo. (AP) - The U.S. Postal Service has installed anthrax-detection equipment at its mail distribution center here.

The center is the largest in the state, according to Al DeSarro, a Postal Service spokesman based in Denver.

Such equipment is being installed at 283 mail processing sites nationwide over two years. About 100 sites are already operational.

The Cheyenne Mail Processing and Distribution Center is one of the first facilities in the Rocky Mountain region to get the equipment. The center has about 300 employees and processes an average of 840,000 pieces of mail each day.