QMC Down The Hole drilling rigs
QMC 43
QMC 44
QMC 45
QMC 46
QMC 47
QMC 48
Down The Hole (DTH) drilling, is a rock drilling method where the hammer is located directly behind the drill bit, delivering impact energy at the bottom of the hole. It is ideal for drilling deep, straight, and large diameter holes in hard rock
