University of Arizona

Special Collections is available by appointment. Read our update.

Mining

Search results

  1. Letters Regarding the Russell Process

    Edward H. Russell was the inventor of the process for extracting silver from raw ore by lixiviation, using hyposulphite. This procedure was first successfully introduced in September 1884 at Silver Reef, Utah. Carbons of letters in bound letter copying ...

    castanoe - 2016-11-21 11:28

  2. Save the Scenic Santa Ritas records

    Save the Scenic Santa Ritas (SSSR) is a non-profit organization whose volunteers aim to "protect the scenic, aesthetic, recreational, environmental and wildlife values of the Santa Rita Mountains, Patagonia Mountains, Canelo Hills and San Rafael ...

    mnboyer - 2020-12-18 11:33