Dynatect provides protective solutions in automation—such as automated doors, clutches, cable carriers, manual doors, ball screws, bellows, roll-up doors and machine-door actuators—to leading ...

Now that the pit is finished, assembly of the north end of the machine will start. Once the 57-foot-diameter drilling machine is put together, tunnel boring is to start this summer.

SEATTLE -- Bertha, Seattle's tunnel machine, achieved what officials called "a significant milestone" on Thursday when it broke through a 20-foot-thick concrete access pit wall into a s ...

Bertha, the world’s largest tunnel boring machine, today broke through a 20-foot wall of a repair pit, WSDOT reported.It will continue drilling two more feet before stopping to build another ...