| 21. | Samples are usually core samples composited over the height of the mining bench.
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| 22. | Recent research has been core sampling in the Antarctic to determine historical conditions.
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| 23. | This summer, 3, 000 core samples will be taken from the river's bottom.
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| 24. | "One site could require thousands of core samples, " says Davison.
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| 25. | Recently Tom Harlan completed the dating of the old core sample.
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| 26. | Analysis of the core samples found that pebble concentration and density varied dramatically.
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| 27. | Ice core samples were taken from Upper Fremont Glacier in 1990-1991.
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| 28. | And he worked once on a glacier, taking core samples.
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| 29. | Core samples from the stalactites underwent chemical testing and other examination to determine age.
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| 30. | This seemed absolutely the natural home for these core samples.
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