I am guessing he used the mail.
Using the US Mail it meant such a delay after being lost and then misdirected and re-routed to the right address that the bomb materials degraded and then disintegrated into moldy paste. Like old flashlight batteries turning to whitish gunk.
I recently had three inexpensive items lost in the mail to me and earlier have had some stated as “delivered” (one had a $56 value) and probably stolen by the woman who was the Saturday substitute for my good mail man who gets a Christmas gift card every December from me. Since the P.O. complaint investigation claimed “delivered” and their phony GPS for her said it was barcode scanned as delivered right near my place, I was refused money for the loss. Shmucks.
one would have to be the most brilliant chemist and mail fraud expert EVER! Good luck with that! we can all be sure that mail in AND out of any prison will be subject to intense scrutiny and may require recompense of some type to facilitate what comes in and what goes out. maybe a Rich chemist “accidentally” poisoned some folks while they were dining with his now deceased wife? maybe a chemist with a minor in microbiiogy with an agenda toward the virus pimps who SOLD his covid ideas to “someone else” without asking first? wondering who wants who to be the who that the other who’s are going to do the “who” to to determine the hierarchy of who IS who?