"no evidence of bombs has ever been found"
Nor even looked for.
What better evidence that the words of the people that were actually there? I guess they can't tell one noise from the other... might have been somebody nailing a picture hook in the next office, huh? Really big hammer.
I'm not sure what you'd expect to find and who you expect would find it since the "real 19 Arabs" controlled the cleanup and the investigation.