Horizontal directional drilling (HDD) was introduced in the late 1980s; the process was not an overnight success. Drill manufacturers spent the initial years explaining to skeptical contractors the ...
Maker claims the pneumatic hammer can drill 6.25-in.-diameter holes at penetration rates of up to 150 ft. per hour HammerHead claims its Roughneck R500 rock drilling system can turn any horizontal ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback