There are three separate lines to pull out different types of fiber from home recycling bins, with cardboard separated from the mixed stream right away. Cardboard is thick and high-fiber compared with newspaper, which makes it valuable to paper companies because fiber material gets thinner each time it is recycled.
January 24, 2011 4:00 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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