Reporter JUSTIN NOBEL spelled it out in his June 9, 2022 story, As U.S. LNG Expands in Europe, a Hidden Threat Grows.
More professional data has followed since then, but I found, Radon in Natural Gas from Marcellus Shale by Marvin Resnikoff, back in January 2012 of particular interest:
“The potential environmental and public health impact of radon in natural gas from the Marcellus Shale formation is enormous. Wellhead concentrations in Marcellus Shale are up to 70 times the average in natural gas wells throughout the U.S.”Marvin Resnikoff, Ph.D.
“Being an inert gas, radon will not be destroyed when natural gas is burned in a kitchen stove. The radon is not oxidized and is not made benign or non-radioactive in the burning process.”Marvin Resnikoff, Ph.D.