Cleaning a Chinese railway tunnel.
<video controls autoplay loop>
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17150513390846.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
1952 subway tunnel cleaning machine - photo
Constructing a tunnel under a highway - GIF
Holland Tunnel No. 1 electric tow truck and fire engine - photo
How tunnels are dug - GIF
Making a truck fit inside a low-clearance tunnel - GIF
Tunnel blasting shockwave - video
Tunnel boring machine breaking through - GIF
Tunnel washing truck - videos
