To put this in perspective 22.54 per 100,000 would die due to motor vehicles in the same year that Slotin died. The average car (especially on US roads) is much more deadly and can become deadly in a blink, much faster than plutonium.
How many people died of not just plutonium, but all criticality events? Less than 22, total (most of those Soviet). There is little reason to believe that even if these were household materials that they would be more dangerous than cars in the USA.
How many people died of not just plutonium, but all criticality events? Less than 22, total (most of those Soviet). There is little reason to believe that even if these were household materials that they would be more dangerous than cars in the USA.