On each side of the Menai, tunnel head
houses, roughly the size of a three storey building, will help ventilate the tunnel and stop the cables from overheating.
My older sister once got stuck in a tunnel head
The tunnel head
pilots the course of the drive and excavates with a cutting bit equipped with carbide drag teeth and disc cutters.
However, the deer was unharmed and eventually left the station on its own through a tunnel headed
toward the Reagan National Airport, according to Metro spokesperson Dan Stessel.
Shallow enough to jump down into, it was an auxiliary entry point for a tunnel headed
in the direction of Lambourn village square, half a furlong to the south.