The Politics of Coltan: An Interview with Michael Nest
Calculating profits made from coltan is difficult, but I estimate that the total amount made by the Rwandan army from coltan in 1999 was approximately US$62m; by the Rwandan army and its Congolese-based ally (the RCD-Goma) in 2000 approximately US$10m; and by all armed groups in 2008 approximately US$11.8m.