"The footprint (horizontal or map projection) of the Mission-Pima ore body fits comfortably in the superimposed anomalies at Hay Mountain. Similarly, the footprint of both Bisbee, Arizona, and Bingham Canyon, Utah, also fit comfortably within the anomaly highs at Hay Mountain." (emphasis added).

WOW.

There is good reason to think ore grades would be comporable (i.e., economic), so this is rather amazing.