The damaged tunnel machine’s front end is finally resting on the surface of Seattle’s waterfront, after the 4-milllion pound load spent Monday night airborne. The operation was finished around 10:30 a ...

Within a few days, the final pieces of tunnel-boring machine Bertha’s famed cutting disc will be removed and taken to a scrap-metal yard. Only two of the eight longest spokes, plus the center, ...

The Drum Cutter Heads for excavators are designed to cut hard and fractured materials, concrete or rock wall profiling, quarry works, demolitions and dredging. Interal hydraulic piston motor and ...