What are you trying to prove? What do you believe these pictures show? Do you really believe the attack spores of 2001 were coated this way and NO ONE NOTICED? Or are you trying to say they were coated this way and thousands of people CONSPIRED to keep it a secret?
We KNOW that scientists have coated spores in all sorts of screwball ways since the anthrax attacks, because the screwball ways were described in the media and some idiot might actually try to use a screwball technique described in the media. So, scientists have to know what such things look like.
Out of context, all these pictures show is that it is POSSIBLE to coat spores with silica in all sorts of screwball ways.