Chernobyl. Here are some of the robotic heroes involved in the clean up of the roof next to Reactor 4. The ambitious plan to use German, Japanese, and other robots ultimately failed, as the robots would simply break down from the radiation. So - the so called biorobots were used. That's humans. They would break down too, just later, having been given 100 rubles and a certificate.
The explosion at reactor four scattered radioactive debris in a large area around the unit, especially the roof of neighboring reactor three. The conscripts who had to clean the roof were given the nickname “biorobots.