The only place I know that you can find the most current spot price is the quakes99 Twitter board. I'm not sure where he gets it but he usually posts it close to closing time. The other place is the Nymex Uranium Futures Price update but that does not reflect SPOT. It reflects Uranium Futures which usually closely resemble spot.
You can also see the Futures on Barchart but only after close of markets - usually at around 6 PM Eastern Time. The Spot is more true that the Futures but they have run in very close correlation for the past year at least.
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