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9 years ago|4.2K views
After the accident, it was necessary to remove from the roof of the reactor No. 3 the debris of radioactive graphite projected in the explosion. Mechanical robots were tested at this task, but they were helpless, locked in the debris or inactivated by the intense radioactivity. So men were employed in this work. Radiation level on the roof was 10,000-12,000 Roentgens per hour. They could not stay two minutes on the roof and were called "biological robots" - "biorobots".

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