Nov 26, 2009· UN report: What it says on natural resources ... The Group has obtained documents and testimonies from government mining officials in Walikale claiming that out of every 2,000 Congolese Francs taxed on each 50 kilogram sack of cassiterite mined, 1,000 Francs are given to security officials, and 30 to 40 percent of that sum goes to the FARDC ...