Reverse Circulation definition

Reverse Circulation or “RC” means a machine that uses a bit attached to a down-hole hammer to produce a hole. Unlike diamond drilling, RC drilling produces samples of rock cuttings rather than a sample of rock core. The down-hole hammer is powered by compressed air, which also acts as the medium bringing the drill cuttings up to surface.
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Reverse Circulation means a drilling method using a tri-cone bit, during which rock cuttings are pushed from the bottom of the drill hole to the surface through an outer tube by liquid and/or air pressure moving through an inner tube.
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Examples of Reverse Circulation in a sentence

  • Drilling techniques Reverse Circulation and diamond drilling Drill sample recovery Recovery information is not available.

  • Increasing the Exploration Momentum: From two diamond drill rigs currently operating on day-shift only, CTM plans to ramp-up back to three rigs on double-shift (resource drilling) and add an Reverse Circulation rig in Q3 2020 to focus on greenfield targets.

  • Lion One Australia Ltd and Yukuang Australia (WA) Resources Pty Ltd seek to conduct exploratory operations to Reverse Circulation Drilling and Diamond Drilling programme.

  • A total of 236 Reverse Circulation (RC) holes have been drilled in the project area, of which 88 holes were at the Contact Deposit, 101 holes were at Contact North and 27 holes were at Contact South.

  • TRC agrees to drill three to five Reverse Circulation drill holes on the Property during the first lease year.

  • In the opinion of Entech the resource evaluation reported herein is a reasonable representation of the global gold mineral resources within the Far Fanning deposit, based on Reverse Circulation and Diamond Drilling sampling data available as of July 31st, 2019.