pretty sloppy handling of this source if you ask me.
I'm formally a State LRSO (State - location radiation safety officer). I saw the breaking news on this, there lots of unanswered questions!!!
Globally, transportation of any RA source is extremely closely monitored by government, in our case the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA).
Going by the breaking news report, there's obvious gaps from when this cargo landed before being reported lost, why? You are supposed to register it as being landed asap!
A little box it was transferred in was loaded on a pellet, a bolt became loose and the source fell through the bolts hole. Are you serious! Extremely incompetent!
The company who this source belongs to should be held financially accountable until its found, no ifs or butts!