I’m not sure the nuke processing facility was the site in the video where the cloud is rising from the incident. I used Google Earth to locate several possible camera points based off the mountains visible in addition to the direction of the sunlight. This appears to be relatively early in the morning with the sun to the right of the frame. I base it to be morning off news reports and that later in the day the official news agency changed its story.
So my quest was to pick various points around the areas south of the nuclear facility, then tilt the terrain view and could not find the mountain profile that matched the video. If it were possible to know the location of who took the video we could then do the same thing and then follow a line of sight path to see what falls in it.
There just doesn’t seem to be much in the way of infrastructure between this point and the peaks suggesting the video point is possibly north of Isfahan so I am off on an adventure to see if I can find this industrial location and then use the bearings suggested by the sunlight to see what is out there.
I think you might be referring to the explosion prior to this one outside of Tehran at the IRGC missile facility.