Apparatus and method for controlling an underground boring tool

Apparatus and method for detecting a location and an...

Apparatus and method for detecting an underground structure

Apparatus for controlling the force applied to a drill bit while

Attitude and drilling-direction control device

Automated control system for back-reaming

Automatic drilling process and apparatus

Automatic method for monitoring the vibrational state of a drill

Automatically operated boring head

Autonomous excavating apparatus

Autoreaming systems and methods

Bit face orientation control in drilling operations

Boring tool tracking fundamentally based on drill string...

Boring tool tracking fundamentally based on drill string...

Boring tool tracking fundamentally based on drill string...

Boring tool tracking fundamentally based on drill string...

Command and control for boring system

Coring bit motor and method for obtaining a material core...

Device for adjusting the path of a rotary drilling tool

Device for drilling a hole in the side wall of a bore hole