You don’t need to be a genius to figure out that centrifuges installed 70–80 meters underground will be largely unaffected by bombs which are believed to have an effect down to a depth of 60 meters.
replies(8):
For concrete, ( that the mountain limestone is almost like..) is only 18 meters.
"... analysts at Janes say the weapon can penetrate about 200 ft (60 m) of earth or 60 ft (18 m) of concrete.."