A gigantic steel cage has been designed and constructed over the Chernobyl nuclear reactor, which is infamous for one of the world's worst man-made catastrophes in history. More than 30 years after the explosion, the dreaded reactor has been finally sealed off. 

According to a report from Mirror UK, it took a total of six years to design and manufacture the 108-meter-high arc used to cover the said reactor. Fearing possible dangers to workers who would be constructing the said arch, super bots have been used to carry, move, and assemble the big dome. Still, the construction required over a thousand workers from different parts of the world, and it took intricate planning to ensure none of them suffer from any possible danger.

The Chernobyl disaster in 1986 was one of the most devastating nuclear tragedies the world has seen in the past decades. A catastrophe created by flawed human calculations, it happened when safety systems have been deliberately turned off during a late-night power failure stress test. The worst conditions at the worst of times, a steam explosion caused continuous spewing of plumes of radioactive material lasting for a total of nine days.

According to the archives of the World Nuclear Association, the accident has caused more than thirty immediate deaths and hundreds of thousands of elective abortion. Cases of cancer, deformation and a variation of different diseases have been reported through the years which has been attributed to the disaster. Now, 30 years later, the wounds may have healed, but it has left scars that the world will never forget.

Nuclear plants have become a very potent source of energy for the past decades, and many powerful countries in the world have been harnessing its incredible power. However, statistics in the study of the World Nuclear Association show that hundreds of nuclear plants in Europe alone are being decommissioned with expected completion within the decade. This is after the devastating results of yet another unforgettable nuclear disaster in Fukushima in 2011.