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Figure 1. In mid February 2009 a team of scientists from across the country met at Salt Lake (Lake George) located in Kidder County 10 miles NW of Streeter, ND, to take cores of the bottom sediment. The team included Ms. Jaime Toney, graduate student, Brown University, RI; Dr. Sheri Fritz, University of Nebraska; Dr. Paul Baker, Duke University, NC; and Dr. Eric Grimm, Illinois State Museum. Also present were Dr. Allan Ashworth, NDSU and several geology students.

Figure 2. This figure shows the coring device ready to be lowered through the ice. A site on the lake previously located with sonar and GPS was used. The site was in approximately 42 feet of water. The coring device was lowered to the bottom and a 3 foot core was captured, brought to the surface, stored and the process repeated.

Figure 3. Dr. Eric Grimm, Illinois State Museum, holding the pipe used to lower and retrieve the coring device. Each section of pipe must be removed as the core is brought to the surface.
Figure 4. Dr. Sheri Fritz examined the core as it was extracted from the coring device. A total of 42 feet of sediment was removed from the lake bottom.

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