Danish director Poulsen travels to the eastern Congo to explore the way the mining of cassiterite (a tin oxide used in cellphones) is fuelling militarism and casual cruelty. There are harrowing scenes here as Poulsen makes his way to, and down into, the militia-controlled Bisie mine in that blood-soaked corner of Africa. He shows a stubborn bravery in the face of constant dire warnings of his impending doom. The scenes in and around the mine are like Dante’s ninth circle of hell. The action shifts back and forth between the Congo and Finland where Poulsen (a very polite, Scandinavian version of Michael Moore) seeks to confront Nokia, the world’s leading cellphone manufacturer. Corporate gobbledegook replaces agitated security guards.