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How does the drilling with water-powered technology influence the formation compare to drilling with diamond core drilling?

Answer:

One project evaluation states that diamond core drilling gives the same level of small settlement as when drilling with is as the Wassara water-powered technology gives.

In one particular case, the diamond core drilling showed to be 50% of the total settlements of 7,6 mm, whilst only approx. 25% of the settlements could be derived from the water-powered drilling.