PRIPYAT, UKRAINE - JULY 10, 2019: Workers outside the new mobile metal structure, officially known as the New Safe Confinement, built over Reactor 4 of the Chernobyl Nuclear Power Plant, the new metal shelter has been officially handed over by the EU to the Ukrainian authorities; the construction of the 1.5bn euro metal shelter began in 2012; Reactor 4 is the site of the 1986 Chernobyl disaster. Pyotr Sivkov/TASS (Photo by Pyotr Sivkov\TASS via Getty Images)
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