Liquidation of the consequences of the Chernobyl nuclear power plant accident

USSR. Ukrainian SSR. Kiev Oblast. The national flag of the USSR, raised on a concrete distribution boom by workers of Construction Department No. 605 of the USSR Ministry of Medium Machine Building after completing work to cover the reactor hall during the construction of a protective "Shelter" over the destroyed fourth power unit, clearing the roof of the third power unit from radioactive debris and starting up the first power unit at the V. I. Lenin Chernobyl Nuclear Power Plant after the accident. On April 26, 1986, an explosion occurred at the fourth power unit of the NPP during equipment testing during the reactor shutdown for routine preventive maintenance. Valery Zufarov, Vladimir Repik/TASS