Evaluation of radon gas air concentration in schools in Waist, Iraq Eman Ahmed, S. S. Nemah, Esraa S. Obayes, Gufran Hade Seood and Ali Saeed Jassim E3S Web Conf., 592 (2024) 06001 Published online: 20 November 2024 DOI: 10.1051/e3sconf/202459206001