Arizona Geological Society 2021 presentation series began on 14 Jan. with Jan Rasmussen and Stan Keith of MagmaChem.Org discussing their “Magma Metal Series”.
In March 2019, President Donald Trump signed a public lands bill creating the Santa Cruz Valley National Heritage area encompassing parts of Santa Cruz and Pima Counties. This followed more than a decade of effort on the part of U.S.
Hudbay hurdles final obstacle to initiate their mine plan operation at the Rosemont Copper Mine south of Tucson, Arizona.