Massive machines to drill the Gateway Hudson River rail tunnel arrived in North Bergen to be assembled like Legos to build a ...

Crews are now drilling a launch pit to hold the massive tunnel-boring machine for the Alaskan Way Viaduct Replacement project. The project will be using the largest diameter tunnel boring machine ever ...

Boring is the method used to enlarge a hole that has already been cast or drilled via a single-point cutting tool or a boring head that contains multiple such tools. The hole created by a boring ...

The straightness of a hole is a typical question in the course of any deep-hole drilling project. The industry standard guarantee for straightness is less than 0.001-in. run-out per inch given good ...