Nobel Prize winning "scientist" Dr. Luis Alvarez was given the task of x-raying the pyramids at Giza to find hidden chambers. Using naturally occurring cosmic rays, his scheme was to place spark chambers, standard equipment in the high-energy particle physics of this time, beneath the second pyramid of Chephren in a known chamber. By measuring the counting rate of the cosmic rays in different directions the detector would reveal the existence of any void in the overlaying rock structure.

Dr. Alvarez was in the observation plane that flew over Hiroshima on August 6, 1945. Here is a quote from the autobiography of Dr. Alvarez, published in 1987:

By September 1966 Jerry Anderson, my son Walt, and I, with our wives, were ready to go to Cairo. Jerry brought equipment mock-ups to make sure everything would fit through the pyramid passages. Ahmed Fakhry arranged for the joint Pyramid Project to occupy a modern building near the Second Pyramid's Belzoni entrance. It had been his home and office when he was chief inspector of pyramids. We converted it into a combined office and shop complete with electronic instrumentation and machine tools. I have long been a member of the board of directors of Hewlett-Packard. Because of Bill Hewlett's interest in the joint Pyramid Project, Hewlett-Packard made a gift of the electronic equipment. The National Geographic Society contributed substantial unrestricted funds, as did my friend Bill Golden. IBM donated a computer, the first any Egyptian university owned. (Alvarez, Alvarez: Adventures of a Physicist, p. 233).
Alvarez and his team were about to use space age technology to look inside the oldest building in the world.

Dr. Luis Alvarez recommended using cosmic rays to x-ray all the pyramids in the Giza Plateau.

Archaeologist and author Ahmed Fakhry was his liaison in Egypt.

Their work continued until the Six-Day War in June 1967.

The x-raying–supposed to last for 2 years–was interrupted by the outbreak of the Six-Day War in June 1967. The Egyptian military believed Alvarez and his team had helped the double pyramid "Jews" by allowing their planes to completely destroy the Egyptian Air Force on the ground. As a result, the work was suspended, and they were ordered to leave the country.

The results were ASTONISHING. The cosmic rays could not penetrate the water saturated limestone blocks of the pyramids.

To buy his silence, Alvarez was awarded the Nobel Prize for Physics in October 1968.

The $1.2 million prize money persuaded him to keep the results of the tests secret!!

Alvarez really believed in not letting his left hand know what his right hand was doing. Oblivious to his previous failure, in 1974, a massive 1 million dollar project was launched by the National Science Foundation in the U.S. to locate hidden chambers in the Giza pyramids.

In 1974, apparently unaware of the pyramid x-raying of Alvarez, the National Science Foundation launched another attempt to x-ray the pyramids.

This time the results were published.

The limestone rocks were too saturated with water to allow penetration by cosmic rays.
The search had to be abandoned because the electro-magnetic sounder equipment could not penetrate the limestone rocks due to their high water content.

Limestone from all over Egypt was tested against Cheops limestone for water content.

The results were that Great Pyramid limestone is UNIQUE . . . and not found anywhere else in the world because it is pre-Great Flood limestone.

A report was published in 1975 by the National Science Foundation in Washington City:

A Joint Egyptian-American research team conducted electromagnetic sounder experiments during autumn 1974 with the primary objective of locating archaeologically significant chambers in the Giza area. Radio frequency losses in the limestone rock of the area, ranging from 6 dB/m at 10 MHz to 25 dB/m at 150 MHz, appear to preclude much practical application of radio-frequency sounding in the vicinity of Giza. The high losses are contrary to expectations based on samples analyzed before the Giza experiments, but are consistent with later laboratory analyses made at the high temperature and high humidity characteristic of the Giza environment. (Electromagnetic Sounder Experiments at the Pyramids of Giza. p. iii).

Only a few academics were made aware of these facts because it threatened to demolish Darwinism and his sinking sand theory of evolution. Of course, none of the people involved in the experiments were awarded Nobel Prizes!!