Drifter applications and definition - Roxar
A top hammer drill has a long rod known as a drill string to which a bit is attached to the end. In the same way as a chisel is hit by a hammer, the top of the drill string is hit by a hammer known as a drifter, which crushes the rock. A DTH drill has a drill string with a drifter attached to the end, which is located in the bottom of the hole.
Get Price