RAB Drilling is the simplest and most economical technique and is typically the first in a mineral exploration project. It uses a rotating drill bit that cuts and breaks the rock which is then lifted out the hole by compressed air. Very similar to a borehole drilling procedure, the major difference is in collection of samples once the rock chips have reached the surface. Mats or plastic is placed around the hole, and the chips are collected and bagged for every meter drilled.
