[Wonder Warthog]

"A small envelope stained with a drop or so of a solution containg radioisotopic iodine, chromium, cesium, etc., etc. could wreak havoc whether or not significant levels of radiation were involved......"

Not with anyone who knows diddly about radiation dosage, radiation effects, and health physics. Do you suppose that the conveyor lines in post office sorting areas aren't already equipped with radiation detectors. AT MOST, an envelope with your "drop of radioactive solution" MIGHT give some dose to the guy who picks it up out of the mailbox and carries it back to the post office, but I would suspect that any such exposure would not exceed current limits for "allowed occupational exposure".

[tracer]

You apparently did not comprehend the phrase "whether or not significant levels of radiation were involved" in the sentence of mine that you copied. And, no, USPS does not currently employ radiation dection devices in most of its facilities.

[templar]

Do you suppose that the conveyor lines in post office sorting areas aren't already equipped with radiation detectors.

Man, I sure hope so. Can you immagine the next nuclear attack being delivered by the USPS instead of a missle? Total bummer.