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009909

Sinking an exploratory bore hole using shearlegs, and a lever to work the borer. From 'The Popular Encyclopaedia' (London, 1862). Engraving.

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Filename
009909.jpg
Copyright
Irish Photo Archive
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2927x1831 / 1.1MB
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Sinking an exploratory bore hole using shearlegs,  and a lever to work the borer.   From 'The Popular Encyclopaedia' (London, 1862). Engraving.