In your book,”The Pyramids”, you discuss possible casting methods for the casing stones of the Great Pyramid and Red Pyramid. You mention that there were inscriptions on the bottoms of these blocks, indicating they were cast upside down, then turned over. I am not Egyptologist, so please excuse my ignorance, but what did these inscriptions say, and what was the purpose of even having them on there?
Also, I recently obtained copies of the articles printed by yourselves and those of Cambell, Folk, et, al.. hoping to better understand the science of geopolymers. I think I have more questions than ever before now! Your opponents do make some interesting counterpoints to the cast-in-place theory, but they also fail to address other key points in your book:
What do they have to say about the quartzite burial chamber of Amenemhet III?
Or the famine stele?
What is there counter to your theory about the Grand Gallery in the Great Pyramid?
What do they make of the mafkat mining?
In the decade since your book was published, has anyone more eloquently tied together so many aspects of Egyptian history and technology?
Has anyone countered your interpretation of Pliny’s description of “murrhine vases”?
Are your opponents simply exploiting what little “cracks in your armor” and simply ignoring those parts of your theory that they cannot reasonably dispute?
Has anyone taken up your challenge concerning the famine stele and any other hieroglyphic texts that support your theory?

All the answers are either “they ignore it” or “they don’t disagree with my interpretations”.

published in Science in Egyptology, Proceedings of the Science in Egyptology Symposia, Manchester, U.K., pp. 511-520, 1984.

The hypothesis that the limestone that constitutes the major pyramids of the Old Kingdom of Egypt is man-made stone, is discussed. Samples from six different sites at the traditionally associated quarries of Turah and Mokattam have been studied using thin-section, chemical X-Ray analysis and X-Ray diffraction. The results were compared with pyramid casing stones of Cheops, Teti and Seneferu. The quarry samples are pure limestone consisting of 96-99% Calcite, 0.5-2.5% Quartz, and very small amount of dolomite, gypsum and iron-alumino-silicate. On the other hand the Cheops and Teti casing stones are limestone consisting of: calcite 85-90% and a high amount of special minerals such as Opal CT, hydroxy-apatite, a silico-aluminate, which are not found in the quarries. The pyramid casing stones are light in density and contain numerous trapped air bubbles, unlike the quarry samples which are uniformly dense. If the casing stones were natural limestone, quarries different from those traditionally associated with the pyramid sites must be found, but where? X-Ray diffraction of a red casing stone coating is the first proof to demonstrate the fact that a complicated man-made geopolymeric system was produced in Egypt 4,700 years ago.

Click here to see how you can download paper number A.