The Assistant Driller (AD) had gone to the Monkeyboard via the Derrick ladder to assist the Derrickman to raise a work platform that the Derrickman could not lift completely vertical. The work platform was located on top of the segment of fingers on the Driller’s side. At the time of the incident the rig was pulling out of the hole in preparation to run 10¾ casing. The platform needed to be raised so they could rack back the last 37 stands on that side making more room on the rig floor to run casing. 95 stands were already racked back on the off drillers side.
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