the potential to increase the rate of radon emissions from decorative stone

Today, natural rocks are popular in modern houses. Visage (surface) and decorative stones are suitable for internal and external use in the buildings; due to having high hardness and resistance in all climates.But some of the consumer groups and sanitary cliques are concerned about scattering and diffusion of radon gas by these valueable rocks. So, the investigation of this problem is necessary. For this purpose the real and accurate test must be designed for radon diffusion poten- tial of these rocks. This research indicated the researchers’ concering is true and exact