This event was first detected internationally by sensors in Forsmark. After this event, Anatoly Dyatlov was imprisoned for failing to follow safety (10[1])procedures. The city (10[1])of (10[1])Slavutych (10[2])was built to house the people who were evacuated due to this event. (10[1])Medals were awarded to the “liquidators” (10[1])who responded to this event. (10[1])The New Safe Confinement replaced the concrete (10[1])“sarcophagus” that was built around the location of this event that began after the explosion of Reactor Number Four. For 10 points, name this disaster that occurred at a nuclear power plant near Pripyat in modern-day Ukraine. ■END■