Rumor has it that to ensure realism without CGI, Nolan enriched his own Uranium and used it to detonate an actual fission bomb. Just like Stanley Kubrick faked

Rumor has it that to ensure realism without CGI, Nolan enriched his own Uranium and used it to detonate an actual fission bomb. Just like Stanley Kubrick faked the moon landings by actually shooting it on the moon for authenticity. /S