since two thousand and one marc olivier herman has been leading a powerful organization in a little known campaign. a campaign involving a device that has become indispensable in our daily lives. it's simple stuff the cell phone this mobile phone is a remarkable piece of engineering but look inside there's blood in this machine that is so there's blood in this device because your mobile contains tiny electronic circuits and they couldn't work without a mineral called cold hands that it's mind in the eastern congo. yet this song there is blood here the blood of congolese who are dying in a terrible conflict. to learn more about co time the precious metal at the heart of every mobile you must go to the congo fourteen hundred kilometers from the capital kinshasa near the rwandan border in south keep. this region is a geological miracle stuffed full of minerals and it's ravaged by war four million people have died in the past thirteen years the violence feeds off the abundance of natural resources. we're driving towards the mountains where the mines are it's a dangerous region the congolese a