23 h 5 m, 25 abr 1986 ano - Night shift come on duty

Descrição:

The night shift were unaware of the test happening until they walked into the control room. They had also never done this procedure before and had instructions some of which were crossed out. Leonid Toptunov a young man of 25 had all of 4 months experience of this job. He later died of radiation exposure.

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