The main difference between CAA and PRB is that CAA has a net profits royalty which has taken a long time to bring into a revenue strem.
The Goldex is a net smelter royalty... thus revenue stream as soon as any PRB ore is smelted/ milled
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Goldex NSR
Probe holds a 5% net smelter royalty (NSR) interest on claims covering a portion of
Agnico-Eagle Mines Ltd. ("Agnico-Eagle") Goldex deposit, located five kilometres
west of Val d'Or, Quebec.
In 2005, Agnico-Eagle announced that a new gold mine would be built at Goldex,
with production expected in 2008. Goldex hosts a measured resource of 1.6M ounces
Au in a low grade, bulk tonnage environment. An annual production rate of 170,000
ounces of gold at total cash costs of $240 per ounce. With gold prices at an all time
high, a positive production decision at Goldex means that Probe's NSR has moved a
step closer to becoming a significant potential revenue stream for the Company.