[Sacajaweau]

I pull back in part on what on what I said....However...I'll wait for the experts...and I haven't seen vents mentioned...

AI...just spits out whatever it touches...backs up nothing..

[Openurmind]

I’m not sure where it was... Think it was here. But I also ran across a diagram of how the bombs were sent down the shafts and then they exploded from the inside out.

The images affirm this claim.