"The Jerusalem Post has learned that the attack was carried out through an explosive device that was smuggled into the facility and detonated remotely. An intelligence official told The New York Times on Tuesday that the attack took out both the primary and backup electrical systems."
"Davani confirmed on Monday that the attack last July was also carried out with explosives that were smuggled into a centrifuge assembly facility at the site, with the explosives embedded in a heavy table that was brought into the facility."
https://www.jpost.com/middle-east/natanz-attack-destroyed-facility-50-meters-underground-664979
"Davani confirmed on Monday that the attack last July was also carried out with explosives that were smuggled into a centrifuge assembly facility at the site, with the explosives embedded in a heavy table that was brought into the facility."
https://www.jpost.com/middle-east/natanz-attack-destroyed-facility-50-meters-underground-664979