High above New York City’s streets, ironworkers building the 70-story One Manhattan West tower are laboring inside of a six-story, 900-ton steel-mesh cocoon that hydraulically crawls up the sides of the building as they erect structural steel around the tower’s concrete core.
Aiming for a safer approach to "cocoon" a defunct nuclear reactor at the U.S. Energy Dept.'s Hanford waste site in Washington state while its radioactivity decays over 75 years, crews will enclose it in a steel shell.