Image: Thames tunnel shield
Thames_tunnel_shield.png (787 × 542 pixels, file size: 233 KB, MIME type: image/png)
Description: Diagram of the tunnelling shield used to construct the Thames Tunnel, London.
Title: Thames tunnel shield
Credit: Contemporary image (19th century), probably from the Illustrated London News.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
The following 2 pages link to this image:
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