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HDD Techniques for Hard Rock: Vermeer Underground Equipment

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.

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