FACTBOX: IAEA report's key findings on Iran

(Reuters) - The International Atomic Energy Agency reported to the U.N. Security Council on Wednesday that Iran has ignored a 60-day deadline to stop enriching uranium or risk a third round of sanctions against it.

The West suspects Iran is violating the Non-Proliferation Treaty by using a declared civilian nuclear energy program as a facade for mastering the means to make atom bombs. Iran says it only wants an alternative source of energy.

Below are the most important findings of the report.

* NO HALT TO URANIUM ENRICHMENT

-- The report confirmed Iran had disregarded a March 24 Security Council resolution ordering it to suspend all nuclear enrichment-related and fuel-reprocessing activities, including research, within 60 days.

CENTRIFUGES

* The report documented Iranian progress towards creating a basis for "industrial-scale" production of nuclear fuel, a big step-up in just three months from a research-level program that refined only very small amounts of uranium.

As of May 13, it said, Iran had installed 1,640 enrichment centrifuges, divided into 10 interlinked fuel-producing networks -- known as "cascades" -- of 164 each. Eight of the cascades were enriching uranium, two were being tested under vacuum without uranium inside, and three more were under construction.

Iran is enriching the fissile element in uranium to 4.8 percent, suitable for power plant fuel, but not yet in usable quantities. Bomb-grade uranium must be refined to 80-90 percent.

* A U.N. official familiar with the report said Iran was on course to launching 3,000 centrifuges in its underground Natanz complex by end June, the springboard toward "industrial-scale" enrichment totaling 54,000 centrifuges.

LACK OF TRANSPARENCY

* The report said Iran continues to stonewall IAEA inquiries into the nature and scope of Iran's atomic research, including unexplained indications of military involvement such as high explosives testing and the design of a missile re-entry vehicle.

"Unless Iran addresses long outstanding verification issues ... the agency will not be able to provide assurances about the absence of undeclared nuclear material and activities in Iran or the exclusively peaceful nature of that program.

"The Agency's knowledge of certain aspects of Iran's nuclear activities has deteriorated," the report said.

* Iran agreed in March to permit short-notice IAEA inspections at Natanz in addition to regular monthly visits. The first such inspection, announced two hours in advance, was conducted on May 13. In return for such access, however, the IAEA suspended a demand for surveillance cameras pointed at the centrifuges, diplomats close to the IAEA say.

* Iran has stopped giving the IAEA advance design information on future nuclear sites, heightening concern about Iranian goals for a planned heavy-water reactor, which Western leaders say could be used to make bomb-grade plutonium. Iran says such data is unwarranted as the reactor is long from completion. The IAEA insists on a right to such information.