It added that, “Advanced centrifuge rotor assemblies are typically assembled in ‘clean rooms,’ an expensive-to-build environment free from dust and other contaminants,” and a 2018 video showed what appear to be clean rooms at the facility in question.
Other destroyed items which could be hard to replace could include: “balancing machines, specialized rotor assembly equipment, measuring equipment and centrifuge test stands.”
Albright estimated that the facility would take at least a year to rebuild, but likely longer since it took six years, from 2012-2018, to build it and become operational the first time.
Although the explosion will not prevent Iran from performing advanced centrifuge research at other locations, Albright said that only the Natanz facility had the potential capability to mass produce advanced centrifuges in the thousands.