Hermione Wrote:
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> the theories of Davidovits/Morris and
> Barsoum/Ganguly/Hug were emphatically dismissed as
> "nonsense" by Klemm & Klemm

I’m well aware of the percussion-theorists’ emotional reaction about this research using contemporary material analysis methods directly looking at what is there.
Have Klemm and Klemm ever produced an airgap-free black combination with their percussion and grinding method? And yes, I’m aware of their published experiment on that which they tried once, but obviously failed to produce the same quality as seen in the airgap-free limestone constructions in Egypt. Those are for example the GP casing or the bent pyramid, there the mostly still existing casing and layers behind.