Right. If you look at the area in Google Earth, you can see lots of small dirt roads and little round areas which are probably test drilling sites, spread over tens of square kilometers. Like most open-pit mines, it will be big.

If you want exact coordinates, here's the future mine entrance in Google Earth.[1] The county or state widened the road, put in a turn-off, added turning lanes, and posted a "Mine Entrance" road sign. The turn-off dead ends within ten meters at the property line, as of when the picture was taken. The mine hasn't built their side yet.

[1] https://earth.google.com/web/search/Thacker+Pass/@41.6994929...

I assume single foot would be what they consider to be the center of the mine? Though I don’t know how Wikipedia would have that information yet; maybe it’s the default output of their map selector or something. An actual survey of the mine would need to be done to know where its center is

could be artificial precision coming from degs min sec to decimal??