IMF, World Bank and Malian mining royalties http://www.eurodad.org/whatsnew/articles.aspx?id=4157

Consequently, African countries have lost millions of dollars in government revenues that could have been used to combat poverty and achieve the Millennium Development Goals (MDGs). Mining companies in Mali are not paying enough taxes Following IMF recommendations, Mali’s government decided to reduce the royalty rate applied to gold mining companies from 6% to 3% in order to encourage investment in this sector.