Tungsten: Genocide in your gadgets?

Deep inside cellphones, iPods, and laptops lie four particular metals: tin, tantalum, tungsten, and gold.

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Graphic: The Enough Project ranked gadgetmakers by their efforts to curb or at least investigate the use of conflict minerals, such as tantalum and gold, in their products.
(Rich Clabaugh/Staff)
These "Three T's" and gold are essential to the technology industry but are also notorious among human rights groups. For years, warlords in eastern Congo have mined and sold the minerals to finance brutal conflicts and sexual violence.

"Rebel militias are making hundreds of millions of dollars off these materials materials that go mainly into electronics," says Sasha Lezhnev of The Enough Project, a branch of the Center for American Progress that works to end genocide.

To shed light on the human cost of gadgets, The Enough Project released a report ranking tech companies by their efforts to rein in the use of conflict minerals. Only a handful of corporations received positive scores. However, Mr. Lezhnev says, consumer pressure has pushed those top few toward plans that could shut down conflict mines and improve the entire industry.

While Congo holds a significant share of the world's Three T's, other mines often safer and better-paying mines dot the globe. Yet some smelters favor Congolese ore because it costs a third to half of the usual market price.

"In eastern Congo, you see child miners no health or safety standards," says Lezhnev. "Minerals are dug by hand, traded in sacks, smuggled across borders."

This ragtag approach benefits the warlords in two ways, says Jason Sterns, former head of the United Nations Group of Experts on the Congo, who was not involved in the study. It keeps costs minimal and also obscures accountability.

The problem: Electronics companies rarely own the factories in which their products are made. They design gadgets and then enlist manufacturing and assembly plants, which enlist material sourcing firms, which enlist smelters, which enlist mining supply companies, which then enlist mines. This twisting global supply chain leaves behind little reliable paperwork and lots of room for deniability.

"We require all of our suppliers to certify in writing that they use conflict-few materials," wrote Apple chief Steve Jobs in response to consumer questions last summer. "But honestly there is no way for them to be sure. Until someone invents a way to chemically trace minerals from the source mine, it's a very difficult problem."

Rather than wait for a scientific breakthrough, several tech giants, including Apple, have pushed for stronger audits and mining certifications, similar to the Kimberley Process that helps curb conflict diamonds.