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...k up the kelly so that it hangs from the derrick above the rotary table. ''Tongs'' (large pipe wrenches) (13 and 14) or chains are used to unscrew the kelly ...rks also transfers power to make up and break out the drill string via the tongs (13 and 14).

* makeup tongs http://www.glossary.oilfield.slb.com/en/Terms/m/makeup_tongs.aspx