This report is based on field research carried out in October 2011 and April 2012 in Katanga Province and Kinshasa as well as desk research. Amnesty International delegates visited several sites in Katanga including Kolwezi, Likasi, Lubumbashi and Manono. Interviews were conducted with public officials, international development organizations, senior managers of Congolese and foreign companies. The delegation visited mining communities and mine sites throughout Katanga and interviewed dozens of artisanal miners and their families, including representatives of artisanal mining cooperatives. They also visited 15 injured miners in the hospital. Follow-up interviews were conducted in Katanga in March 2013 with governmental and non-governmental sources and letters were sent to the companies named in the report, seeking their comments on Amnesty International's findings. The following companies responded: Glencore Xstrata, Groupe Bazano and Misa Mining. The following companies did not respond: China Railway Engineering Corporation (CRECG), China Railway Group Limited, Compagnie Minière de Luisha (COMILU), Congo International Mining Corporation (CIMCO), Gécamines.