Thirty years after the Chernobyl nuclear disaster, engineers are giving the epicenter of the long-defunct facility a facelift. With financial assistance from more than 40 nations, including the United States, workers are constructing a colossal structure that will contain the destroyed reactor and the sarcophagus that was built immediately after the accident.
"This new structure is unprecedented and unique," said NajmedinMeshkati, a professor of civil and environmental engineering at the University of Southern California.
The enclosure, weighing more than 33,000 metric tons and expected to be completed next year, will be one of the largest movable structures ever constructed. Its base occupies an area larger than two football fields and at its crest the structure will rise to a height of about 32 stories.

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