For two days running, he swallowed a thermometer with a transmitter attached to it and then rode a stationary bicycle in an uncomfortably warm room for an hour.

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The miner had swallowed pit slurry and it is understood he collapsed before being taken to Morriston hospital.

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Mr Shallcross said he welcomed the cash but hoped it had not been swallowed up in buying extra grit during the snow.

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It looked as if the light were radiating from inside him, as if he had swallowed a fistful of emeralds.

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And one strategy they used, in addition to framing the discovery more sympatheticaly, was that Marshall swallowed a solution made up of the bacteria he said gave people ulcers and he showed how sick it could make a human being.

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