You raise a good point:
This is easily explained.Also surprising was the argument from Narayanan when the point was raised about how undamaged S1 shaft was. He tried to prove by attributing it upto the sharp 90 degree angles of the shaft.
The question is how come the shaft right above the explosion remained undamaged but Khetolai few kilometers away got cracks.
1. It is reasonable to assume that the "undamaged A-frame and shaft" must have also got shaken with AT LEAST the intensity that Khetolai got shaken by. In an earthquake, the ground heaves up and down and maybe sideways, but also, a lot of energy travels along the ground. So an A-frame or bucket at the top of a concrete shaft will also go up and down along with the ground, but nothing else major should happen to it.
2. Think of what happens to someone who stands in a bus going at high speed over a typical desi "National Highway". The floor of the bus remains intact, but someone standing up without holding anything, is liable to end up falling over or suffering a few cracks on the head. Likewise, the vertical walls of a house may suffer serious damage, though the ground itself may look like nothing has changed.
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3. Now pls go back and look at the picture of the "undamaged A-frame and shaft". There seems to be a clear line on the ground surface, approximately at the location of the shaft. In the foreground (to the left lower part of the image) the ground seems smooth and uncracked. In the background (upper right and upper left) the ground seems completely different - totally cracked and broken like it was bumped up and down with extreme violence. No "crater" but very severe cracking.
4. Also read the stories from the Russian nuclear tests that Gagan posted, claiming that they used to place a glass of vodka (I think that's mistranslation - they probably placed a bottle and a glass) at "Ground Zero" and the first guy to get there after the test got to drink it in celebration. Going by the "A-frame criterion", this should be a TOTAL fizzle, hain? IOW, the Russians are saying that nothing much happens even to a glass container if it can survive the severe shaking.
5. Gerard posted some videos of Ground Zero during a hydrogen bomb test. Supposedly from Alaska. The wheeled trailers can be seen jumping up and down violently, but survive undamaged. If they had been planted in the ground, they may have been torn apart, but they were on rubber tyres with shock absorbers.
6. Now as for the 90 degree bend in the shaft. Again, this was not my idea - I used to imagine that the shaft was drilled straight down - but someone here - maybe Gerard - posted a picture showing that this is not what is done. The shaft was described as having "AT LEAST" a couple of 90 degree bend, precisely to AVOID any venting etc. through the shaft. So - there is no reason to believe , and every reason NOT to believe, that the A-Frame and concrete-lined shaft mouth was anywhere near being directly at "Ground Zero".
I must say that I find it extremely disappointing that Dr. Santanam would cite that "A-frame" as his shocking revelation, and more so that ramanaji would jump on that and get all devastated. The "A-frame" surviving undamaged has absolutely no significance, and surely Dr. Santanam of all people would know that.
7. Let me point out another aspect. Santanam also declared that "soil and stones flew up several meters, that's all", describing what happened at Ground Zero. So, if that happened, the A-Frame must have been quite something, hey, to have survived a blasting with stones flying out of the ground fast enough to rise several meters into the sky? And the concrete-mouthed shaft also must have been something to have survived completely undamaged, with smooth soil all round, if soil and stones flew out at high speed through there?
I have to conclude, therefore, that the "soil and stones flying up" did NOT happen anywhere near the A-frame. That tends to prove my suspicion that the A-Frame was nowhere near Ground Zero.
So that whole line was pure sensationalism, and I go by the simple question:
If truth is on ur side, why would u use false reasoning?
which of course leads me to uncomfortable conclusions about the motives behind this whole tamasha. In all the murder mysteries I watch, the murderer slips up usually by being a bit too overconfident, and going too far in trying to be smart. I think Dr. Santanam seems to have done exactly that with the "A-frame" sensationalism.
So there is nothing inconsistent between the "undamaged concrete shaft mouth and A-Frame" and the damage at Khetolai.
Pls let me know any more questions. I too believe that the aam aadmi, saada common sense approach is the only one that works here, because the real data are Classified, and all the amateur expertise in the world is not going to arrive at any definitive conclusion. This was fairly evident to me at the outset.
The best approach in such controversies is to go to the statements made, and the evidence seen BEFORE anyone had time to twist and cover up facts and think through what would be most in their own interests to say.