When researching and analyzing this I think it's important to keep in mind that Wilson's ambassador post was to the Republic of the Congo aka Congo, Congo-Brazzaville. The article is talking about the country east of that, the Democratic Republic of the Congo, formerly known as Zaire. (Don't worry if that's confusing, it confused me when I first started researching this and I still have to double-check to keep it straight, LOL.) Wilson certainly had some knowledge of the latter but his Gabonese contacts were more closely tied to the former, I don't know if he had any business or political ties in DR Congo. He may conceivably have invested in gold there when he was getting into gold investment, but I don't know that for a fact, and even if that was the case it may not have any bearing on the subject of the article. However something which may be of interest in terms of the big picture would be Clinton's Zaire policy at the time Wilson was involved with NSC on African affairs from 1997-1998. IIRC Wilson did play at least a peripheral role in implementing Clinton's policy by using his contacts in the region to assist in bringing Gabon and other regional powers into negotiations aimed to apply pressure in support of Clinton's goals (see
Politics of Truth 225f, 234f, 249f). Here is one article touching on what was going on then:
http://www.usafricaonline.com/news/n_kinshasa.html
With Laurent Kabila and his Alliance of Democratic(?) Forces for the Liberation of Congo-Zaire entrenched in power across that country while still jostling for power with former prime minister Etienne Tshisekedi in the emerging social, economic and political architecture of the new Democratic Republic of the Congo, a few points regarding the journey to this moment in that country's history need be put in fresh, recent perspective. Simply, for the reason of not allowing more recent developments to becloud our proper, contextual recall of the movements of history and the dynamics of events that saw to the booting of Mobutu, one of the world's worst despots. . .
The article notes that Clinton's personal envoy in these matters was Bill Richardson, which might provide another key word to search on. I don't know if the uranium operation described dates back to this period, but it's worth checking into.