South32 manganese & zinc mine clears environmental hurdle https://www.tucsonsentinel.com/local/report/082624_south32_air_permit/south32-manganese-zinc-mine-clears-environmental-hurdle/
State regulators issued an air quality permit to South32's Hermosa Mine this week, clearing one more hurdle for the manganese and zinc project planned for the Patagonia Mountains in Southern Arizona.
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