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UNIDENTIFIED MALE: This here is what we call 28 (ph) - inch underreamer (ph).
CNN Transcript Jun 2, 2007
JOE GWYNN (ph), WORKS OFFSHORE DRILLING RIGS: This here is what we call a 20 inch underreamer.
CNN Transcript Mar 17, 2006
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bilby commented on the word underreamer
*defiant* I have a derreamer today!
April 17, 2009
reesetee commented on the word underreamer
If you say so.;-)
ecbrenner commented on the word underreamer
A heavy-duty tool for enlarging the bore hole significantly beyond the bit diameter.
April 15, 2009