Nothing really secret about the yellowcake. It was found in 2003 when the U. S. was checking Iraqi military sites.
It was placed under the control of the IAEA (International Atomic Energy Agency).

The announcement (re-announcement?) now is one of those political ploys by the Bush government that isn't worth much notice. Shipment cost the U. S. $70 million, which sounds like someone made a lot of money on the transfer- maybe that should be the newsworthy story!

Al Jazeera says the Iraqi government has pledged in principle to repay some of the costs (Brian Whitman, Pentagon spokesman), since they were the ones who requested its stabilization and transfer.

An Al Jazeera article is not entirely correct; it calls Cameco a 'wholesaler," but they are Canada's refiner for the Port Hope and Blind River nuclear plants (which produce electric power). Of course Cameco once made sales of yellowcake, etc., when the Canadian mines were in operation.