Kyshtym disaster

Irregularities were becoming more frequent at the combine itself.

An excerpt from the article 42 facts about Kyshtym disaster

Metal liquid waste tanks with a capacity of 300 cubic meters were located inside a cylinder made of cement. Between the tank and the cement wall was a free space into which water was poured to cool the tanks. The structure was covered with a layer of earth two meters thick. However, technicians working at Mayak did not spend enough time inspecting and maintaining the infrastructure. Nor were regular radiation measurements taken.