Support local journalism Now, more than ever, the world needs trustworthy reportingâbut good journalism isnât free. Please support us by making a contribution. Close Hak and Ung Shin spend time in a tunnel at the Merry Widow Health Mine in Basin, Mont., piecing together a puzzle on June 30, 2021. For more than a decade, the California couple have made the trip to expose themselves to radioactive radon, which they say keeps them healthy. KATHERYN HOUGHTON/KNS By KATHERYN HOUGHTON KAISER HEALTH NEWS Aug 5, 2021