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 3
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 3
Subject
Tunnels -- Massachusetts -- Photographs.
Hoosac Tunnel (Mass.) -- Photographs.
Date
2010-05-06T18:24:40Z
2010-05-06T18:24:40Z
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 3,” Digital Commonwealth , accessed May 25, 2013, http://digitalcommonwealth.org/items/show/13593.
Comments