An American expert said that slabs made of
polished granite do not emit such amounts of radiation as to be termed
Mike Brennan, a radiation health physicist with
the Washington State Department of Health in Olympia, says that even a
Geiger counter cannot detect radiation from a slab of granite from more
than a few inches away.
"So in terms of direct radiation, you would have
to spend a long time, at least hours per day, laying on the granite
countertop, in order to receive very much exposure from it," Earth
quoted him, as saying.
He even dismisses suggestions that granite
worktops were likely to emit lots of radioactive radon gas, the leading
cause of lung cancer among non-smokers.
"What we encourage people to do is to test their
home for radon. The test kits are readily available and they're easy to
use. And if you test your home for radon and you don"t have a radon
problem, you can be pretty certain that you don't have a problem in
connection with your granite countertop," he says.
Andrew Karam, a radiation safety expert based in Rochester, New York, agrees.
He thinks that it will not be a good advice if people are asked to tear out pricey granite worktops.
"If anybody is thinking about doing that, I would
advise them to give me a call, because my wife and I are looking to
redo our kitchen," he says.