Chad Cox, Brent Scarbrough & Co., at the completion of a 200-ft bore using the Barbco retractable roller cone head. Barbco is bringing to the market its new line of Retractable Roller Cone Heads (RCH) specialized to take on various hard rock ground conditions. Traditional roller cone heads from Barbco go back to the early … Continue reading Retractable Roller Cone Head for Auger Boring