Inside Mighty Machines S01E04 - Deep Sea Oil Rig

For over 40 years, the Brent Delta oil rig stood tall in the North Sea, extracting oil and gas from beneath one of the roughest seas on the planet. Now this extraordinary machine has reached the end of its life and has been towed ashore to a decommissioning yard, where it'll be torn apart, melted down, and sold for recycling. Engineer Chad Zdenek is on hand to help the salvage team dismantle the 40-story, 26,000-ton oil rig and uncover its five engineering innovations.