Tunnel under the English channel
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C.
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Article
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1878
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Elsevier Science
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English
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## Strength of Cast Steel. 293 Strength of Cast SteeL--As a proof of A. yon Gautier's statemcnr, that the strength and ductility of steel are increased by heating ar, d subsequent slow cooling, yon Tunner experimented with No. 4 Inneberg manganese-steel. His experiments were satisfactory, but he o