Reverse Circulation (RC) is a drilling method that uses drill rods with inner tubes inside to allow the samples to return to the surface through the inner tube. The samples are produced by driving a pneumatically operated drill hammer and drill bit that is attached to the drill rods through the rock. This chipped sample then travels from the bottom of the hole, up through the inner tubes, and out through a sampling system where it is collected for analysis.
The method is growing and preferred technology to collect quality samples in initial exploration, ore body development, and in-pit grade control due to its cost efficiency and fast collection of dry, quality samples.
CMTech uses Explorac E100 circulation drilling rig, for exploration drilling to depths of 200-250 m. It is compact and robust with the required power to collect samples quickly (sampling ability up to 250 mt) and is specifically designed for reverse circulation drilling and other down-the-hole (DTH) applications.
Our company uses advanced featured durable Atlas Copco’s Drill Air compressors for RC drilling.
