a. To move the drilling machine forward into alignment with the borehole,
using the rack-and-gear pinion to facilitate moving the machine.
Long b. To stack and arrange the drill rods in an orderly fashion in the
tripod, mast, or derrick, or horizontally on a rack provided on the
ground. Long c. To place core on a rack. Long
Source:
Dictionary of Mining, Mineral, and Related Terms
