There was no mushroom cloud. Long term monitoring will tell the tale. There is an explosion with these bombs once it impacts the bottom of its self created chamber.
I have no doubt there is a death toll in Iran. The people near these facilities should be distributed potassium iodide initially as a precaution.
If the chambers can be immediately sealed it might be far less a problem for Iran and a larger community. Iran needs cooperation from the United Nations. The IAEA should be given immediate access to the safe extent possible.
Stop plotting retaliation immediately. There is a greater danger.