The Toxic Pit With A $3 Admission Fee

Tom Scott
The Berkeley Pit, in Butte, Montana, was once the richest hill on Earth: the Anaconda Copper Mine. Now: it’s not all that rich, and it’s not much of a hill. Instead, it’s a toxic pit filled with sulfuric acid.

Thanks to the Montana Resources team:


“10,000 miles of tunnels”:
“35,000 people a year”:]

Protective Water Level, and the details of the underground water that I didn’t have time to go into:

The first treated water being removed from the pit:

Edited by Tom Fuller

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