But for most projects, TBMs are custom built. As one TBM manufacturer says, "Every one of our machines is a prototype." One of the most important criteria in designing a machine is determining what it ...

A 22-year-old man died on Wednesday morning after he was critically injured by a hole-boring machine in Spring, officials said. The machine was being operated by the man's grandfather to dig a hole at ...

Bertha, that gigantic, inoperable tunnel boring machine everybody loves to hate, finally might get out of that big hole it dug itself into. After an environmental review, Seattle Tunnel Partners, the ...