Here are some horizontal directional drill (HDD) techniques when working with hard rock. Working Conditions: Hard Rock. -Step 1: Pilot Bore. Tool: Dual Rod Drill Head. Technique: Position Bent Sub for Steering. -Step 2: Pullback. Tools: Hole Opener, Swivel. -Result: Bore Complete.Continue Reading
Bible verse of the day
Also unto thee, O Lord, belongeth mercy: for thou renderest to every man according to his work.
