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Tri-nitro-glycerin : as applied in the Hoosac Tunnel, submarine blasting, etc. .. (1872)

Mowbray, George M · North Adams, Massachusetts : J.T. Robinson · leaf 9

An illustration from Tri-nitro-glycerin : as applied in the Hoosac Tunnel, submarine blasting, etc. .., 1872, leaf 9
Drilling Machine at Heading.

Nitroglycerin · Blasting · Hoosac Tunnel (Mass.)

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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