Maybe somewhat related to this topic is an experience I had years ago with 3 kegs of BE powder.
A friend was getting out of reloading and gave me the 3 kegs (the old red steel kegs) of Bullseye pistol powder; one opened and two sealed. I left them in my 1986 Toyota Pick-up and that night the truck was stolen from the driveway; not more than 10 feet from where I was sleeping. The next morning I asked the local policeman that took the report what the chances were of getting the truck back. He said "you'll never see it again. Its likely on its way to Miami where it will go into a container and be shipped to 'The Islands". So I filed a claim with my insurance co., got paid for the loss, bought a different truck and forgot about it.
Months later there was a thing on the local TV news that the Sheriffs Office Bomb Squad had removed several 'drums of explosives' from a warehouse rental space. The following day I got a call from the Detective on the case advising that they had found my name on some paperwork in the warehouse and wanted me to come down, bring a copy of my police report, and identify my stuff. The warehouse had apparently been used to strip stolen vehicles because there were several big engine blocks on the floor along with various wheels and tires. About the only thing that was mine was the bed cover from my truck and the paperwork from the glove compartment (owner's manual, vehicle registration and various receipts). I asked about the Bullseye powder and he said the Bomb Squad had it - you don't want it do you? You bet I did and spent the next day calling various offices trying to track down my property!
After I ran into various dead ends I asked one of the deputies that I shot NRA Bullseye matches with what to do. He hooked me up with someone in Training that could get it. He also advised "you better get ahold of him tomorrow because they are planning on "blowing it up" in the bomb disposal pit at the range". Well, eventually I hooked up with a grumpy deputy who finially, reluctantly, released the powder to me. I've often wondered if the powder would have really been destroyed or had been promised to someone else....