International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(4358) Percussion drilling, Rope drilling method, Cable tool method, Standard method, Solid tool method, or Churn method
1 - A method of drilling wells. The percussive action of the drill bit reduces the strata to small chips or powder, the powdered material being removed by bailing. Also called `rope drilling method`, `cable tool method`, `standard method`, `solid tool method`, or `churn method`. 2 - See 5960.

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