Drill Floor Action-Links are shifted from alternate sets of elevators while running drill pipe on GlomarChallenger. This "dual elevator" system is used to avoid damage to the drill string which might result in premature failure.

• Deep Sea Drilling Project

This digital image is a surrogate of an item from the SIO Deep Sea Drilling Project Records, 1961-1987

• Deep Sea Drilling Project
• Deep Sea Drilling Project
• Glomar Challenger (Ship)

• Boring
• Drilling platforms

• image

• UC Regents

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2022-06-29