File:North Rvr Tunnel - N tube shield 1905.jpg
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Summary
| Description |
English: Rear view of the hydraulic tunnel shield installed during construction in the north tube of the North River Tunnels under the Hudson River. The construction crew is installing the first iron ring for the lining of the tunnel. The North River Tunnel project was part of the larger New York Tunnel Extension project of the Pennsylvania Railroad. |
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| Source |
B.H.M. Hewett, W.L. Brown (1910). "The New York Tunnel Extension of the Pennsylvania Railroad. The North River Tunnels." Paper No. 1155. Transactions of the American Society of Civil Engineers. Vol. LXVIII, September 1910. p. 236, plate xxxviii. |
| Author | Photographer not identified. |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:09, 27 June 2013 | | 976 × 1,212 (577 KB) | Caseyjonz | == {{int:filedesc}} == {{Information |Description={{en|Rear view of the hydraulic tunnel shield installed during construction in the north tube of the {{w|North River Tunnels}} under the Hudson River. The construction crew is installing the first iron ... |
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