What is HDD? - Keys Bit- Your Worldwide Leader in HDD Drilling Products
About Horizontal Directional Drilling - MWRA
Directional boring - Wikipedia
Compact HDD Methods | TT Technologies, Inc.
Coffee Offshore - Horizontal directional drilling (HDD) HDD is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along