In the wake of the reported massive explosion at Iran’s secret nuclear facility at Parchin on Sunday, it was reported by USAToday that Iran has admitted it had “tested ‘exploding bridge wires’” at Parchin, and “not neutron initiators.”
Just last Friday, Arutz Sheva published an article explaining how the IAEA in November 2011 reported that it had received “highly credible” information that Iran had tested “neutron initiators" at the site, and that Iran had told it that it had exploding bridge wire technology.
The same November 2011 IAEA report also reported that Iran had tested exploding bridge wires. Exploding bridge wires act to simultaneously trigger the conventional explosives components of a nuclear bomb, so as to create the right condition for the nuclear core to fully detonate in a nuclear reaction.
In specific, the IAEA November 2011 Annex stated that "among the alleged studies documentation are a number of documents relating to the development by Iran, during the period 2002–2003, of fast functioning detonators, known as 'exploding bridgewire detonators' or 'EBWs.'"