On Oct 30, 11:42*pm, "m II" wrote:
Poured concrete bricks constructed from remote stone quarry dust.

--------------"Bill" *wrote in ....

It made me ponder that people were probably a lot better at using what
they had, than we might give them credit for, centuries ago. *Does
anyone know how the pyramids were made yet?

Nope.

Some French chemist suggested that, but no one who has examined
the stones agrees with him. The blocks were cut from limestone in
a nearby quarry. Aside from the fact that it is trivial to
distinguish between
natural stone and concrete, some of the stones were set in mortar
which
would hardly be the case had they been cast in place.

Current thinking is that a metric buttload of independent contractors
working in teams were coordinated by people whom I would regard
as among the world's greatest project engineers.

For instance, the massive bakery that supplied the workers with bread
consisted of numerous small one-man bakeries.

--

FF