I'm positive that it was here at FR that these satellite images were shown well before our military went into Irag!
I think that you are thinking of the similar images that Colin Powell showed to the Security Council. But, I also recall hearing that Saddam had been very busy in the days leading up to the war, moving around lots of stuff. I think that the assumption was that he was making the usual preparations for an invasion, which is exactly what moving the explosives would have been.