WASHINGTON — Utah's U.S. Magnesium has vastly reduced its chlorine emissions in recent years, but an environmental group said Wednesday that it is still the nation's worst polluter of "suspected neurotoxicants" and "suspected respiratory toxicants."
Jan 22, 2003
https://research.noaa.gov/2023/01/25/one-facility-makes-a-big-contribution-to-salt-lakes-winter-brown-cloud/
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& since 2021 E3 qoute on AB new mineral policies page:
https://www.alberta.ca/release.cfm?xID=802883CC47846-F888-DE0C-F10E895C1536D91C