Thanks for that information. This diversion ,or unfortunate thread derailment, has
been an interesting learning experience.
I defer to all the more researched and knowledgeable.
Most interesting thanks for going to the trouble!
PS I also appreciated your input of the distinct separate cladding styles, and the
use of granite in the pyramids. I think corbeled granite is also a distinctive segmented feature.
I am still contemplating the most interesting OP thoughts offered by Thanos.
It is complicated, maybe ......way over my head.