What a bullshit.
Those shells were tagged and invenntoried during first inspection. It was not luck that they were found - they went there (Saddam's former chem weapons factory, throughly demolished during first inspection) expecting to find everythinng still in place. And they found it. If it means anything, it means Saddam was expecting to see inspectors back at some point.
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We have only 2 things to worry about: That
things will never get back to normal, and that they already have.