Miners ascending, Central shaft, Hoosac Tunnel

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Miners ascending, Central shaft, Hoosac Tunnel

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George M. Mowbray

'Stopeing out' enlargement, East End Hoosac Tunnel

Author: Tri-nitro-glycerine as applied in the Hoosac Tunnel Submarine Blasting
Author: George M. Mowbray
Published: 1872
Available from gutenberg.org
Posted on: Thursday 15 July 2021
Dimensions: 450*969
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