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The type of drilling that extracts mud through the center of the drill rod is: a) percussion method b) direct rotation method c) reverse rotation method

The type of drilling that extracts mud through the center of the drill rod is: a) percussion method b) direct rotation method c) reverse rotation method
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3 votes
The type of drilling that extracts mud through the center of the drill rod is:

a) percussion method
b) direct rotation method
c) reverse rotation method

asked
User Doublesharp
by
7.9k points

1 Answer

5 votes
The percussion method is the right anwser
answered
User Jgottula
by
7.7k points
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