Courtland-Gleeson area with 113 drill holes representing 25,935 m (85,087 feet or 16.1 miles) including lithology, mineralization, alteration, structure, and assay data.
David Briggs tells a compelling story of the Helvetia-Rosemont Mining District in the Santa Rita Mountains of southern Arizona.
Arizona's slice of the US nonfuel mineral pie is second only to that of Nevada.
The San Manuel copper mine of SE Arizona provides an example of ground subsidence that accompanies block caving.
AZGS's Carson Richardson reviews Arizona mining and mineral exploration at AEMA Annual Meeting, Sparks, NV.
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.
The life and times of a mining town, Superior, Arizona, during the Great Depression, WW II and post-War years.
“We are probably the most regulated mine in the state of Arizona”
Dan Johnson, VP & General Manager of Florence Copper, Inc.
Author, geologist, and mining historian David Briggs' new contributed report, ‘History of the Verde Mining District, Jerome, Arizona’, revisits the long mining history of Jerome.