HHS-OASH-2026-0397-0864 https://www.regulations.gov/comment/HHS-OASH-2026-0397-0864 Hello, I experienced sleep difficulties and tinnitus when I lived near mobile phone masts. I would like to see a scientific study conducted on people who have lived very close to a mobile mast for several years. Those living in very close proximity are exposed to high levels of radiation, so it would be interesting to see how their health compares to that of people living in areas with average to low radiation levels. It would be a simple study, yet it could provide clear answers regarding the impact of strong background radiation from mobile masts. Good luck with your very important work.