PIKETON, Ohio – Employees at USEC Inc.’s American Centrifuge Plant in Piketon reached a major industrial safety milestone by achieving one million hours worked without experiencing a days-away injury. This milestone was achieved as employees operated prototype centrifuge machines for more than 275,000 machine hours as part of the Lead Cascade testing program. In addition, construction of the Company’s commercial centrifuge plant began in May 2007.

“This landmark accomplishment could not have been attained without the ongoing dedication and diligence of each American Centrifuge Piketon employee toward maintaining a safe work environment,” said Daniel Rogers, general manager, American Centrifuge Plant Operations. “This achievement exemplifies our continued commitment to industrial safety and is a great credit to our team.”

USEC has been building the American Centrifuge Plant to provide the dependable, long-term nuclear fuel production capability needed to support the world’s nuclear power plants. As America’s only commercial uranium enrichment facility using U.S. centrifuge technology, the American Centrifuge Plant has an important role to play in America’s energy security and national security.

The Lead Cascade integrated testing program involves testing multiple prototype machines in a cascade configuration. USEC is now working to deploy a test cascade of AC100 series machines in Piketon.  This cascade will be in a commercial plant configuration and operate under commercial plant conditions.

USEC Inc. (NYSE: USU), a global energy company, is a leading supplier of enriched uranium fuel for commercial nuclear power plants.

###