https://scienceblog.com/global-reductions-in-mercury-emissions-should-lead-to-billions-in-economic-benefits-for-u-s/
Mercury pollution is a global problem with local consequences: Emissions from coal-fired power plants and other sources travel around the world through
mercury emissionsglobalreductionsleadbillions
https://www.eenews.net/articles/epa-closes-coal-plant-mercury-emissions-loophole/
The projected $860 million compliance cost over 10 years will be double the expected health and climate gains of $430 million.
coal plantmercury emissionsepaclosesloophole