Mill City, Mono County, California

Other remains include sunken foundations of additional houses, found among pine trees on a hill above the mill site.

In 2012, tests found that water in Mammoth Creek was contaminated by mercury from the stamp mill.

[4] Mercury was used to separate gold from ore at the site, and it was not removed from the mine tailings.

[5] The Forest Service conducted a superfund investigation in 2016, and found that the risk to cabin owners from mercury, antimony, arsenic, and lead was high.

[6] The Forest Service would only allow cabin owners back after remediation (or limit their exposure to 5 days/year).

Mono County map