RC Drilling (Reverse Circulation)
RC Drilling is the most popular method of drilling in the mineral exploration industry as it achieves a better penetration than RAB or Aircore drilling. The drilling mechanism is a pneumatic reciprocating piston known as a hammer that drives a tungsten-steel drill bit.
RIG 1: RC RIG – T450H SCHRAMM
This rig has a separate Sullair Air pack 1150cfm x 500psi Compressor and hurricane booster. A depth of up to 250m can be drilled.
To eliminate manual rod handling and the associated risk of fatigue and injuries, the rig is fitted with a hands free KL Rod Handler.
The support truck for this rig is an 8 x 4 Volvo, with large capacity fuel/water tanks complete with a HIAB crane.
RIG 7: Hydco 1200H
This rig was purchased new in September 2011.
This universal rig has the capability of drilling in either RC or Diamond mode. It has a capacity of 1200m HQ, 1800m NQ and 800m PQ.