Mykerinos has a core... of agglomerated limestone and the first steps were covered with a casing... also made of split granite, not dressed [not cut]. - Joseph Davidovits

In ancient times the Sinai mines were rich in deposits of and , neede for the production of synthetic zeolites. The mines also contained the arsenic minerals of and , needed to produce rapid hydraulic setting in large concrete blocks.

[W]e have two civilizations, one in the north that flourished during the Old Kingdom, god , agglomerated stone, [and] that in the south that flourished under the New Kingdom, god , and carved stone.

They turned back to mud because mud bricks is also a replica of incarnation, in the materials that belong to the Khnum divinity.