The Congo Conflict Minerals Act is a senate bill that fights such trade. Among other things, it proposes that the US military publish a map of armed groups in mineral-rich areas of the Congo. This would make it easier for industries to avoid conflict minerals and trade only in those unstained by blood.
The bill includes the following measures:
· support for further investigations by the UN Group of Experts on Congo;
· mapping of which armed groups control key mines in eastern Congo;
· development of a U.S. government strategy to address conflict minerals;
· inclusion of information on the negative impact of mineral exploitation and trade on human rights in Congo in the annual human rights reports; and,
· guidance for companies to exercise due diligence. (quoted from here)