The Horizontal Directional Drilling Division of The Mears Group is one of the largest HDD contractors in the world. They’ve also got some great content on their website – check of their Media section for the Frontiers of Construction clip, featuring a DCD Maxi-DUB swivel being used for a river crossing.
Just past the halfway mark of the video, when they’re maneuvering the leading end of the pipe towards the drill string, you can see the swivel as they make the final connections to begin the pullback. That’s where DCD Design’s HDD swivels fit in: the drill string turns, the pipe does not.
An extra bonus: that river crossing is about 10 miles from DCD’s plant near Vancouver, Canada!