Chances are... Probably NOT but here's some interesting info on the matter:
GRANITE PRODUCTS AND RADON
It has been known for many years that mined or quarried products such as stone can contain radioactive deposits. Granite, in particular, has been known as a potential source of radiation from naturally occurring uranium deposits and a contributing factor for elevated radon levels in homes.
Allegations that granite countertops emit dangerous levels of radiation and radon have been raised periodically over the past decade, often by manufacturers of competing countertop materials. But with the increasing use of granite for countertops, as well as in other building products, more reports of potentially hazardous countertops have circulated. Articles have been printed in various media, posted on web pages, discussion in forums, and, undoubtedly, the topic will be getting a fair share of television coverage.
Although it has been well known that granite contains uranium and other radioactive materials by the scientific, building, and health communities, the generally accepted position has been that granite in buildings does not pose a serious health risk. That is, considering the other background sources of radiation, the amount of radon from deposits in granite floors or countertops is relatively insignificant.
While most still believe that the majority of granite products do not present a risk, with the increase in granite’s popularity, some new concerns have surfaced. As new granite sources are being tapped, some sources have reportedly been found to contain more significant uranium deposits then in past, which when installed in homes, can result in radiation measurements well above normal ambient levels. Some studies have found 3 to 10% of granite samples have elevated radon levels; others claim as much as 30% of some granite sources had elevated levels. Regular close proximity to granite that emits a very high level of radiation could be a significant risk, but in general the risk may be associated more with whether the radiation contributes to excessive radon levels throughout a house or building.
So what would be the best approach to addressing this issue from the standpoint of a buyer’s or homeowner’s concerns while the issue is further studied and analyzed? As indicated at the EPA Website ― it is recommended a home be tested for radon if there is a granite countertop. Periodic sealing of granite, which is often recommended to protect against stains, may also help limit the movement of radon gas.
Of course, EPA has recommended testing of all homes for radon since the issue of radon in homes first became an topic of discussion in the 1980s, but has not provided a specific protocol for testing related to radon concerns associated with building products.
For more Info. visit the EPA-radon Website (www.epa.gov/radon)
and hardware: If not positioned and attached properly, the door might come off the track and fall.
