From the Washington State Department of Health Radon Program:
Coming January 2023 – Radon Poster Contest (ages 9-13) We are excited to announce we will launch a Poster Contest for children between 9 and 13 years of age in January 2023. We will publish more information closer to the contest date.
See https://doh.wa.gov/data-and-statistical-reports/washington-tracking-network-wtn/radon
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United States