Almost all gems these days undergo some kind of heat treatment, which enhances clarity and color.

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The usual forms of processing that involve heat treatment were found to denature, or destroy, the useful proteins in the mussels.

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At least 900 of the boxes of evidence will be subjected to heat treatment within the coming weeks in an attempt to neutralise the growths.

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In addition to the trophies and the accolades, there have been plenty of spats, with numerous star players feeling the heat of Ferguson's infamous "hairdryer" treatment.

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The two other possibilities, which were ruled out, were on-island heat treatment - in an incinerator, gasification or pyrolysis plant - or a further stage of processing to produce a fuel product, which would also be shipped off-island.

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