[Allan]

I also heard the interview on the Bob Grant show.
(His name is Richard Miniter )

Yes
he said he had spoken recently to David Kay.
David Kay said that the methods of weaponizing dried anthrax were superior
to those of the US and the former Soviet Union.
He (Miniter) did not go into further detail.

[Shermy]

Which raises the question...does Kay know about Matsumoto's allegations about silica and polymerized glass...

It's possible he found info of such process in Iraq...but has not been informed about the Senate anthrax having the same.

[Happy2BMe]

"David Kay said that the methods of weaponizing dried anthrax were superior to those of the US and the former Soviet Union."

Wasn't the US Postal Service having some problems with "sophisticated" anthrax handling a while back?

Nah - too coincidental.