Its enrichment plant was designed in the 1950's and uses more electricity than competitors abroad.

He described the newly revealed enrichment plant as a sign that Iran was at the "summit of power".

A new and previously secret enrichment plant being built underground near Qom was revealed in 2009.

Consequently, a working enrichment plant would have to substantially increase the laser duty cycle.

It has said nothing about the enrichment plant.

The enrichment plant is alarming because it gives the North a second way to produce fuel for nuclear weapons.

It also started building the huge enrichment plant near Natanz, in central Iran.

In February, a tip led the atomic energy agency to the nearly finished enrichment plant.

In the 1990s, the government privatized its antiquated enrichment plants.

The South African enrichment plant has apparently been closed.