Here are three links to the U-tapao Alumni Associations website munitions loading videos for the B-52D. They show the complete process from unloading the bombs from the ships to loading them on the clips, and then loading the clips on the plane.
Part 1 Ship to Shore: www.youtube.com/watch
Part 2 Assembly and Clip Loading: www.youtube.com/watch
Part 3 Loading Clips on the Aircraft: www.youtube.com/watch
Cheers,
Russ