The majority of Metech Recycling's scrap comes from business customers, such as telecom companies. Andrew McManus (left) from the company shows some circuit boards from a cell phone base station, like the one on the floor. When cell phone companies switch from 3G to 4G, for example, it means a refresh of a lot of electronics. Circuit boards contain a combination of valuable metals, such as copper and tin, that can be separated at special metal smelters outside the U.S. In general, household e-waste is less valuable because goods such as TVs don't have a lot of valuable materials and are harder to handle.
May 13, 2011 4:00 AM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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