Swarms of Mini Robots Could Dig the Tunnels of the Future - WIRED

The underground excavation industry is exploring mini robots, plasma torches, and superheated gas to replace the massive boring machines now in use.

Theres no shortage of work out there, either. China recently completed a 20-kilometer railway tunnel in the Longmen Mountains after a decade of construction. Theres the HS2 rail project in the UK, wh… [+3047 chars]

full article...