I’m surprised to see anything alive and growing within 500ft of the riverbanks.
That’s some tough undergrowth! I was born in a town with a smelter. The smelter closed in 1972 and the desert has recovered since then pretty completely. Not having SO2 pumped into the air helps. It was a pretty neat looking old plant though. It had had a machine shop that could make most anything as the railroad had steam locomotives and the rest of the mine used equipment that was out of date.