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0460001828

Top: Sectional view of workings under East River, New York, during preparations to destroy Flood Rock, part of the Hell Gate Rocks complex which prevented large vessels reaching New York Harbour, and presented a hazard to smaller ones. Bottom: Placing dynamite cartridges in drill holes in roof of the excavations. From 'Le Journal de la Jeunesse', Paris, 1886.

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0460001828.jpg
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Irish Photo Archive
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Top: Sectional view of workings under East River, New York, during preparations to destroy Flood Rock, part of the Hell Gate Rocks complex which prevented large vessels reaching New York Harbour, and presented a hazard to smaller ones. Bottom: Placing dynamite cartridges in drill holes in roof of the excavations. From 'Le Journal de la Jeunesse', Paris, 1886.