[Iris7]

I personally would appreciate a translation of the lower part, the drawing part, of the image you have posted. If you were to start at the tunnel entrance and when there are columns of pointer labels going from top to bottom would work for me.

I suspect that if the interior of the tunnel is 3 meters high then the width is much greater than it seems in the drawing. If this is not so then either the tunnel must have been filled in partially after the device was built in the tunnel end cavity or the device will fit through what appears to be a 3x1.5 meter opening.

The second possibility seems unlikely unless concrete pumping was used. The radius of the turns is interesting as well.

Unfortunately I am not up to speed on "P waves" but hope to be shortly.

[familyop]

I did do demolition, BTW, but not with nukes. ;-)

[TigerLikesRooster]

Re #57

Sorry for responding late.

From the entrance, going from right to left,

1st marker: tunnel entrance (3m high)

2nd marker: horizontal tunnel (concrete and dirts are used to block radiation leak)

3rd marker(two pointers to what appear to side chamber or entrance to it):
structures to absorb shock wave and block radiation leak

Looping downward to the detonation chamber, from left to right,

1st marker: the experimental nuclear bomb

2nd marker(has three pointers to right-hand wall): neutron speed detection device, blast yield measurement device, and X-ray measurement device.

The big arrow from the detonation chamber leads to the schematic diagram of plutonium nuke warhead, which you may be already familiar with