We propose a multi-level clustering algorithm for characterizing and understanding directional network patterns across spatial locations, time, and subjects. We validate the proposed method using ...

Horizontal directional drilling (HDD) is challenging and difficult work fraught with unknown obstacles. While it's not possible to eliminate every obstacle, bore planning software tools developed ...

In its relatively short lifespan, horizontal directional drilling has gone from ... be a good fit for a contractor who does an occasional bore," says Klane Kirby, Astec Underground.