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Subsidence at the Resolution Copper (RC) project is predicted to occur in a typical slow and gradual process from approximately year 6 when the cave from the underground mining is expected to reach surface.

The purpose of this process memorandum is to detail the process steps undertaken during the alternatives development process, related to evaluation of alternative mining techniques.

Cultural resources assessment for the proposed trenching within the Gila River streambed at Managed Aquifer Recharge (MAR) Site 5 in District 3 of the GRIC, Pinal County, Arizona.

At the public hearings held during the comment period for the DEIS, commenters expressed concern over potential schedule delays and technical complications with the block cave mining technique proposed for use in the underground operation at the Oyu Tolgoi mine.

The purpose of this process memorandum is to outline the methods and screening results used for the analysis of cumulative effects for the Resolution Copper Project and Land Exchange environmental impact statement (EIS).

Related Documents

• Cumulative Effects Analysis Overview and Screening by Resource
• Addendum #1
• Addendum #2

This study uses simulation-based life cycle assessment (LCA) together with a commercial flowsheet simulation program to compare several copper smelting technologies against each other when producing metallic blister copper from sulfide copper ore.

The decision is to adjust the 2007 Interim Guidelines for Lower Basin shortages and coordinated operations of Lake Powell and Lake Mead as described under Section IX of this 2024 Near-term Colorado River Operations ROD.

The following two new species of land snails were taken on a collecting trip in Arizona during October 1949 by M. L. Walton and the author. They belong to the families Camaenidae and Polygyridae, respectively.

An extraordinary drought in the West in drying up the Colorado River and draining the nation's largest reservoirs - Lake Mead and Lake Powell. And amid the overuse of the river and the aridification of the region, the federal government is implementing new mandatory water cuts and asking states to devise a plan to save the water basin.