File:Beaumont-tunnelbohrmaschine.png
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Summary
| Description |
English: A contemporary plan of a tunnel boring machine from the 1880s on an idea by Colonel Frederick Beaumont and Thomas English. The tunnel boring machine was 9 meters (30 ft) long and was driven with compressed air.
Deutsch: Ein zeitgenössischer Plan einer Tunnelbohrmaschine aus der 1880er Jahren nach einer Idee von Oberst Frederick Beaumont und von Thomas English. Die Tunnelbohrmaschine war 9 Meter (30 ft) lang und wurde mit Druckluft angetrieben. |
| Date | Unknown date |
| Source | Der Kanaltunnel - Fakten und Zahlen, 1994, S. 22/23 uploaded by Opihuck (talk) |
| Author | Unknown author |
Licensing
|
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:02, 14 January 2015 | | 5,456 × 2,564 (36.66 MB) | Opihuck | {{Information |Description ={{en|1=A contemporary plan a tunnel boring machine from the 1880s on an idea by Colonel Frederick Beaumont and Thomas English. The tunnel boring machine was 9 meters (30 ft) long and was driven with compressed air.}} {{de... |
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- Usage on fr.wikipedia.org
