Plans numbered from 1 to 4 are details of Harsen's rock drill : with which the first experiments were made in the attempt to invent a successful rock drill for the Hoosac Tunnel 1864 Sheet 4
Dublin Core
Title
Plans numbered from 1 to 4 are details of Harsen's rock drill : with which the first experiments were made in the attempt to invent a successful rock drill for the Hoosac Tunnel 1864 Sheet 4
Subject
Tunnels -- Massachusetts -- Photographs.
Hoosac Tunnel (Mass.) -- Photographs.
Date
2010-05-06T18:24:41Z
2010-05-06T18:24:41Z
1864
Contributor
Doane, Thomas.
Type
Image
Files
Collection
Citation
“Plans numbered from 1 to 4 are details of Harsen's rock drill : with which the first experiments were made in the attempt to invent a successful rock drill for the Hoosac Tunnel 1864 Sheet 4,” Digital Commonwealth , accessed June 19, 2013, http://www.digitalcommonwealth.org/items/show/13594.
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