Just seen this, let me add, the documentary; "Blessing or Curse: Oil and Uganda's Future" done by AFIEGO early this year...I have seen all the movies suggested by my colleagues and I think they are great contributions, spot-on in fact...

The HBO series Deadwood raises lots of the issues surrounding informal gold mining communities and also reminds us that it occurred in "developed countries" just as it is in developing countries now - albeit it in an over-dramatized way.

I can recommend "Katanga Business", a Belgian film by Thierry Michel. There's a good trailer at http://www.katanga-lefilm.com/. 

Out of many films kindly submitted by GOXIans, 9 films were selected.  For each film, there is a principal reviewer. Check the initial reviews on the movie Blood Diamond by Cindy Kroon and Kobina Aidoo:  http://goxi.org/page/goxi-film-festival-blood-diamond?xg_source=activity  We invite you to post your review in the comment space  about the art of the film and, more important, the substance of the issues raised.