Koncentrirani U 3 O 8 naziva se žuti kolač (yellowcake) i približno je 2000 t žutog kolača potrebno za jednogodišnji rad nuklearne elektrane snage 1000 MWe.

Teheran je objavio da je proizveo prve količine koncentriranog uranija (yellowcake) koji služi u proizvodnji obogaćena uranija, što pojačava zabrinutost Zapada. (Hina

The technology, known as a mixer-settler, is used to separate the uranium from the mined ore to produce concentrated uranium oxide - also known as yellowcake - which can then be converted and enriched in nuclear fuel work

In August, Iran ended its freeze on the conversion of yellowcake to uranium hexafluoride gas (UF6) at a facility near the central city of Isfahan.