a known flaw in nuclear reactor control rods (which slow the rate of atomic fission in a reactor) went unchecked, safety protocols at the Chernobyl Nuclear Power Plant went unheeded, and in 1986 ...

The Chernobyl disaster is the largest in ... of some of the safety devices and the withdrawal of most control rods from the reactor core, which led to an uncontrolled sequence of nuclear fission.

When a routine procedure went wrong in October 1957, a fire broke out at the Windscale nuclear power station in Cumbria, UK.

Ukraine intends to provide detailed information to U.S. officials about the Chernobyl strike during ... layer was placed on the plant’s fourth reactor soon after the 1986 disaster, which was ...

A Russian drone has hit the protective shelter over Chernobyl's damaged nuclear reactor, Ukrainian President ... agency that "the situation is under control". A catastrophic explosion at Chernobyl ...

KYIV, Ukraine (AP) — A Russian drone with a high-explosive warhead hit the protective containment shell of the Chernobyl Nuclear Power Plant ... The inner layer was placed on the plant’s fourth ...