PARIS, March 9 (Reuters) - About half Iran's uranium enriched to up to 60% purity, a short step from weapons grade, was stored in an underground area at Isfahan that seems largely unharmed by U.S. and Israeli bombing, U.N. nuclear watchdog chief Rafael Grossi said on Monday.
"We believe Isfahan had a bit more than 200 kg of 60% uranium. The widespread assumption is that the material is still there," Grossi told reporters on the sidelines of a conference in Paris.