Can anyone here that knows about Uranium production please...

Can anyone here that knows about Uranium production please verify these figures.

The grade reported is similar to the Ranger Mine operated by ERA. Source: http://en.wikipedia.org/wiki/List_of_uranium_mines
(Windimurra is 0.17%, Ranger is 0.2%)

Production costs for Uranium are around US$20/kg, so that works out to be around US$44/pound.
Source: http://www.nti.org/db/nisprofs/russia/fissmat/minemill/develop.htm

Current Uranium price is US$93/pound.

Therefore profit of 7.5 million pounds of Uranium (if sold today): $367 million

Are my back-of-the-envelope figures wrong?

Cheers,
Richard.