Green Leaf Innovations Inc (GRLF)

[gitreal]

Nope, not into trespassing or crawling into unsafe old mines. Besides there are publicly available records which contain quite a bit of information about old mines in Arizona, including the Davis Dunkirk (Azurite) Mine and the Senator Mine.

According to the following website (which is a little more trustworthy than the one you stumbled on),
http://www.mindat.org/loc-53960.html
the Senator Mine is shown with the following info - "Workings include a 200 foot deep shaft (1881) with levels, drifts, crosscuts, etc. Later the main shaft was sunk to 835 feet before 1934."

So, the Davis Dunkirk is still the deepest in North America at 2 miles deep. Must be awful hot down there - lol!

Honestly, it is refreshing to see something besides regurgitated PRs.