CBNNews.com - While the U.N. Security Council is considering a third round of sanctions against Iran for its nuclear program, an Iranian official spoke with the country's Revolutionary Guard about the uranium enrichment program.

"The Isfahan uranium conversion facility is active, and it has produced more than 300 tons of UF6, otherwise known as uranium hexafluoride gas," Iran's Supreme National Security Council deputy Javad Vaidi told members of the elite military, according to the Fars news agency.

At the Isfahan nuclear plant, raw uranium is converted to uranium hexafluoride gas, which is transported to the Natanz plant, where it's injected into centrifuges for the enrichment process.

While low-level enriched uranium is a component of nuclear fuel, it can be further enriched for use in nuclear weapons.

In November, a U.N.-affiliated watchdog said Iran had nearly 270 metric tons of the gas needed for uranium enrichment.

Iran refuses to heed calls by the U.N. to freeze uranium enrichment, claiming it will only be used to fuel nuclear power plants.

Meanwhile, the International Atomic Energy Agency warned that Iran is continuing to expand its overall nuclear program.

Last month, the U.S. National Intelligence Estimate (NIE) report stated that Iran abandoned its nuclear weapons program in 2003, but Israeli officials believe the Islamic republic's goal is to produce nuclear bombs.

Sources: Haaretz, YNet news service