His own process allows the yeast to work quicker and involves first fixing the yeast to the ceramic lining of a stainless steel cylinder.

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Finishing things off: 2 millimeters of lining leather, Vibram rubber soles, a steel shank, a leather heel counter and a styrene toe box to harden the front and prevent nasty stubs.

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China's steel production rose 15% year on year in November after flat-lining in the first half of the year.

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