Tantalum, Tin, Tungsten and Gold Labeled Conflict Minerals by SEC, Disclosure of Use Required

Smartphone makers, among others, will have to disclose the source of minerals involved in various conflicts around the world

You've heard of 'blood diamonds.'

Add 'blood smartphones' and 'blood oil' to the list.

The Securities and Exchange Commission voted Wednesday to finalize sweeping new rules that would effectively force companies to tell the world about their business in 'conflict minerals' with the Democratic Republic of the Congo or an adjoining country.