Lost and abandoned mines

[Ghost Hunter]

Another one. 

https://file.dnr.wa.gov/publications/ger_iaml_reports.pdf

[timberghost72]

Tons of mining info here by state and county. Lists the mines, GPS, map locations and downloads, mining info and more.

https://westernmininghistory.com/

https://westernmininghistory.com/mine-state/washington/

Scroll down to find by county.

[MR5x5]

...did not scour the thread to see if it has already been stated, but, GAIA maps has a mine locations maps that includes type of ore etc.  Not sure if ONX does, but suspect they do too.  Provides for some interesting detours while crawling around the woods.

[Skyvalhunter]

remember some are privately owned, not that anyone pays attention to no trespassing these days

[hunter399]

remember some are privately owned, not that anyone pays attention to no trespassing these days

It's true ,some land I have permission to hunt has mines,and is privately owned.
So..........
He has signage ,but doesn't enforce it too much,unless I'm there hunting then it's enforced.