Both of the below projects are in Central Arizona.  In the first case, big bucks are found to further the project without going to loan sharks or the public -  not a partnership.

https://www.juniorminingnetwork.com/junior-miner-news/press-releases/2714-tsx-venture/amc/96436-arizona-metals-corp-announces-15-million-bought-deal-private-placement-and-increases-kay-mine-phase-2-expansion-program-from-25-000m-to-75-000m.html

The efforts described below involve remote sensing. Copper Fox is widely followed as their property is in the highly prolific Globe/Miami/Florence area, a producer of base and precious metals (plus high-grade turquoise) for around 160 years.  Their target is within the same mineral trend extending from around Superior, AZ, through Tombstone/Bisbee, and into Mexico.

https://www.juniorminingnetwork.com/junior-miner-news/press-releases/606-tsx-venture/cuu/96434-copper-fox-announces-ip-survey-for-mineral-mountain-copper-project.html