(Total Views: 372)
Posted On: 11/12/2017 12:52:06 PM
Post# of 1507
![](/m/assets/46931549/no_avatar_available_thumb.jpg)
A long read but it is a piece of mining history that is relevant:
http://docs.azgs.az.gov/OnlineAccessMineFiles...8ESec5.pdf
http://docs.azgs.az.gov/OnlineAccessMineFiles...8ESec5.pdf
![](/m/images/thumb-up.png)
![](/m/images/thumb-down.png)