In the months immediately after a flawed reactor design triggered the world’s worst nuclear disaster in the Ukrainian city of Chernobyl, engineers and construction workers hurriedly built a steel and concrete “sarcophagus” to enclose the doomed site and prevent radiation leak. Now, as the 30th anniversary of the incident approaches, on April 26, workers at the site are rushing to replace the hastily constructed and ageing structure with another protective shell, named the New Safe Confinement (NSC).
