University of Arizona

Special Collections is closed due to COVID-19, public safety, and social distancing. 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

    Records of the non-profit working to stop mining in the Santa Rita and Patagonia Mountains including meeting agendas, minutes, press releases, news stories, informational bulletins and event announcements. Save the Scenic Santa Ritas (SSSR) is a non ...

    mnboyer - 2020-02-24 15:50