Beta-M type RTGs put out 230 Watts of power. The weight of a standard RTG is 560 kilograms altogether, and the weight of the radioactive portion is around 5 kilograms. This active portion contains 35,000 to 40,000 Ci of activity. The radioactivity of an RTG at the distance of 0.02 to 0.5 meters is 800 to 1000 roentgens per hour. These radioactive sources can reach temperatures of up to 500 degrees Celsius.
That is one NASTY source. I sure hope that device doesnt find its way into some terrorist radiological dispersion device. That would literally take years to clean up.
With the source exposed, within a half meter it will kill, even though you would live for about 4 weeks. If it were dispersed, it would be a nightmare.
I wonder if any of the sources are missing?