Maybe instead of using duct tape to secure the tunnel bolts, they should have used cyanoacrylate to hold it up.
Cyanoacrylate is the technical term for Krazy Glue, or Super Glue. It is an acrylic resin that forms an instant bond when it comes in contact with the hydroxyl ions found in water. It is alleged that one square inch of cyanoacrylate can hold one ton.
A more detailed explanation can be found on HowStuffWorks.
You might remember this guy:
He was the guy who Krazy Glued himself to an I-beam.
Personally I was more impressed with the Super Glue ad that featured a car glued to a crane and being hoisted into the air, but whatever.
It's just that if they're going to spend five bucks on a roll of tape, why not spend five bucks on glue? Especially where the glue has such superior holding power!
All this talk about glue makes me want to go and huff a little mucilage.