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009761

Sinking a mineshaft by Triger's method (1841) devised for use in the difficult conditions of the Basse-Loire coalfield, France. Cast iron cylinders sunk to riverbed. Worker at bottom is in a virtual diving bell into which compressed air is being pumped. The compressed air holds back most of the water that would otherwise filter through the sands. From 'Underground Life; or, Mines and Miners' by Louis Simonin (London, 1869). Wood engraving.

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009761.jpg
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Irish Photo Archive
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1435x3913 / 1.1MB
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Sinking a mineshaft by Triger's method (1841) devised for use in the difficult conditions of the Basse-Loire coalfield, France. Cast iron cylinders sunk to riverbed. Worker at bottom is in a virtual diving bell into which compressed air is being pumped. The compressed air holds back most of the water that would otherwise filter through the sands. From 'Underground Life; or, Mines and Miners' by Louis Simonin (London, 1869). Wood engraving.