Via Business Insider:
Intel will no longer use any tungsten, tantalum, tin, or gold from war zones within Africa’s Democratic Republic of Congo. “Every Intel micro-processor we manufacture in 2014 will be conflict-free,” he said.
The four minerals are essential to any computer or electronic game. They are supplied by mines and smelters in the Congo under the control of war lords who have used them to fuel “the world’s bloodiest conflict since World War II,” Krzanich said.
Click the link to see more: Intel Conflict-Free Minerals – Business Insider