At the very start, one member of the Kurchatov group in Chernobyl—the RBMK reactor specialist Konstantin Fedulenko—tried to tell Legasov that the whole helicopter operation might be misguided. He had seen for himself that each of the cargo drops into the shattered building was hurling heavy radioactive particles into the atmosphere. And, given the small size of the target—partially concealed by the tilted concrete lid of Elena—and the speed of the pilots’ approach, there seemed little chance that any of the sand or lead was making it into the eye of the reactor vault itself. But Legasov
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