These steps are complex , but they are achievable . Congo 's `` conflict minerals '' used in cell phones , other products , co-authors say . Comment: Co-authors : Consumers should urge companies to make products conflict-free . They say Obama administration should work with the Congo to develop legitimate mining .
Congo 's `` conflict minerals '' used in cell phones , other products , co-authors say . Comment: Co-authors : Consumers should urge companies to make products conflict-free . They say Obama administration should work with the Congo to develop legitimate mining .