This event was first detected internationally by sensors in Forsmark. After this event, Anatoly Dyatlov was imprisoned for failing to follow safety procedures. The city (10[1])of Slavutych (10[3])was built to house (10[2])the people who were evacuated due (10[1])to this event. Medals were awarded to the “liquidators” (10[1])who responded to this event. The New Safe Confinement replaced the concrete “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■