SOME CENTRIFUGES MOVED UNDERGROUND

"Iran has moved some of its centrifuge machines to an underground enrichment site that offers better protection from possible airstrikes... the facility in Fordo... is carved into a mountain to protect it against possible attacks... Iran plans to triple its output of the 20 percent enriched uranium and move the entire program to the new, secretly-built Fordo facility, just north of the holy city of Qom in central Iran. The bunker facility is to house approximately 3,000 centrifuges..."
http://www.time.com/time/world/article/0,8599,2089760,00.html