New Scientist said:
A crackdown in the US is forcing technology firms to come clean about the source of the minerals used in their smartphones and electronics
SMARTPHONE makers would prefer not to talk about it. The tiny components that make your phone work could contain materials that are financing a number of bloody conflicts in the Democratic Republic of the Congo (DRC). The vast natural wealth of the country has helped fund decades of fighting between armed groups that has forced more than 2.75 million people from their homes, in addition to ongoing killings, torture and abductions.
Last week the US Securities and Exchange Commission's deadline passed for 1200 US-listed companies to report on whether any metal in their microchips comes from mines controlled by these militias. But while a few, like Intel, provided independently audited reports to the SEC, the majority filed reports saying their sources of tin, tungsten, tantalum and gold – collectively known as the 3TG metals – were "DRC conflict indeterminable".