u/JasonCarswell since you ask for an explanation, I'm not going to give you a Ph.D. in nuclear physics. We'll just use your eyes.

Look at this explosion. Look when there is a glowing column of gas under the mushroom cloud. That GLOWING gas is not "burning". Those are not FLAMES. That is what is called plasma: superheated matter that is ionised from the heat. Such heat cannot be made by chemical explosives. It is ONLY made inside nuclear reactions. This plasma rises, then falls again, still glowing, as it cools. That is not fuel nor gunpowder nor any other known explosive or combustible: those turn to light, heat and often also SMOKE. They don't keep glowing for a minute after the blast. Once again, look with your eyes: THOSE ARE NOT FLAMES, it's just GLOWING while floating in mid-air for a whole minute.

Moreover, look at that mushroom cloud: how long does it burn? Have you ever seen gunpowder burning for a whole minute? No, it blows up and it's done. Look up any and all conventional bomb designs: booooooom and it's over. No chemicals explode continuously for a minute.

I'm not saying this was ONLY a nuke. Obviously there's lots of other things blowing up in there: missiles, grenades, shells, whatever. And they've been doing this every single time in the past couple decades: explode some other shit, and then a nuke, hoping to disguise the nuclear nature of one of the multiple explosions, hoping that the sheeple will go: It's not because it makes a mushroom cloud that it's a nuke, you moron.

Well I'm not firstly talking about the mushroom cloud, I'm talking about the plasma column. Again, plasma is only created at temperatures that are way beyond the capabilities of any chemical explosion.

If you're going to argue, think about this: jet fuel VAPORIZES concrete from its heat. Correct?