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United States Department of Agriculture

Agricultural Research Service

Image Number D2399-1

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Image Number D2399-1

Technicians Kent Heikens (left) and Ben Knutson examine a core sample from the bio-reactor. The topsoil covering the wood chips is seen in the foreground.

 

Photo by Peggy Greb.


640 pixels wide: (d2399-1.jpg)




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Last Modified: 1/31/2012