[Robert]

There seems to be some new reports on kitchen granite benchtops having small amounts of Uranium, releasing Raedon gases into homes.

link

SHORTLY before Lynn Sugarman of Teaneck, N.J., bought her summer home in Lake George, N.Y., two years ago, a routine inspection revealed it had elevated levels of radon, a radioactive gas that can cause lung cancer. So she called a radon measurement and mitigation technician to find the source.
Skip to next paragraph Tony Cenicola/The New York Times
TESTING Reports of granite emitting high levels of radon and radiation are increasing.

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Nathaniel Brooks for The New York Times
DETECTION Using devices like the Geiger counter and the radiation detection instrument Stanley Liebert measures the radiation and radon emanating from granite like that in Lynn Sugarman’s kitchen counters.

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Nathaniel Brooks for The New York Times
A radiation detection instrument.

Nathaniel Brooks for The New York Times
A Geiger counter.



“He went from room to room,” said Dr. Sugarman, a pediatrician. But he stopped in his tracks in the kitchen, which had richly grained cream, brown and burgundy granite countertops. His Geiger counter indicated that the granite was emitting radiation at levels 10 times higher than those he had measured elsewhere in the house.
“My first thought was, my pregnant daughter was coming for the weekend,” Dr. Sugarman said. When the technician told her to keep her daughter several feet from the countertops just to be safe, she said, “I had them ripped out that very day,” and sent to the state Department of Health for analysis. The granite, it turned out, contained high levels of uranium, which is not only radioactive but releases radon gas as it decays. “The health risk to me and my family was probably small,” Dr. Sugarman said, “but I felt it was an unnecessary risk.”

[dj_stick]

that sounds familiar, most everyday normal bricks emit a small amount of radon too