What's really "too bad" was the centifuges didn't blow open.. That way, w/ the 1/2 life of uranium being what it is, they'd not be back into that place for several 1000 yrs!
It's waaay underground, little if any would leak, and they'd be forced to start over.
I've seen firsthand what radiation did to the Japanese.. NOT PRETTY! There'd be little incentive to keep working w/ that stuff around.