Originally Posted by PatrickHenry1775
How about, in addition to the sensible measures in the preceding post, hardened containers for some cargo, such as mail, that would be difficult to screen individually without being opened?
I believe ElAl uses these. I know they've been around for a while as I saw pictures of some being tested a few years ago.
A quick search reveals that the FAA has been working on and testing such containers since 1991.
Details here.
It also looks as if
Dupont put out a press release on this in 2002.