[EricH]

"I dropped my official piece of paper through the ramp."
"Drat! Now how are we to tell if 293 is actually on the top?"
"We could get the field crew to open up the ramp."
"Nah, too much trouble. We'll just eyeball it and get another piece of paper."
"Are you sure? They told me that they had a very limited supply, unlike those darn bins."
"Oh, right. Hey, let's get a fragment from the next bin that breaks beyond repair. It'll be faster than either opening up the ramp or getting another piece of paper."