The Tunnel Boring Machine called B6 is the last remaining drill used in the building of the cross-Channel link.
* Has 227 double-headed rock picks tipped with tungsten carbide
* Possesses a revolving speed of 2.38 revolutions per minute
* As one of 10 TBM, it ate through millions of cubic metres of chalk and soil in digging the Channel Tunnel
The Tunnel Boring Machine B6 was one of eleven machines used to dig out the Eurotunnel.