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Inside the iPad

Tin is often associated with soup and questionable meats, but tin’s real use is for solder, with approximately 30 percent of the world’s supply of tin coming from Indonesia. Electronics manufacturers use solder, which typically contains more than 95 percent tin, to attach and connect components. The iPad’s 7,877 solder points are tiny but omnipresent, in this case contributing up to 3 grams of the iPad’s 1.44 pounds. While it’s impossible to say whether tin from any one mine goes into a specific product, dangerous mines in Indonesia with a high incidence of worker fatalities do supply Foxconn Technology Group, the largest manufacturer for Apple. Shown here are the major components of the iPad and their solder points.

Data: iSuppli, iFixit
Meimarides is an information designer for Bloomberg News.
Whiteaker is an information designer for Bloomberg News.
Daniel is graphics director for Bloomberg Businessweek. Follow her on Twitter @jenniferdaniel.

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