Through fossil clubs and field trips to quarries, Prokopi got to know older hunters who spent their lives beachcombing or standing chest deep in muck, searching for bone.

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Some worked eight hours to get a hole chest deep.

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It has a deep war chest to buy market share, if it choses.

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Given that the nomination will be sewn up in March, when big states such as California, New York, Florida and Texas all hold their primaries, how can any candidates other than Mr Bush, with his war-chest, and Mr Forbes, with his deep pockets, survive beyond spring?

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Other portions of the track are marked with chest-high arrows so walkers know which way to go if waist-deep floodwaters suddenly appear, as they often do.

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The medical device giant Medtronic is testing a related technique called deep-brain stimulation, in which electrodes from a device in the chest are surgically threaded several centimeters into the brain to the site of damage.

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