The U.S. Extractive Industries Transparency Initiative (USEITI) has produced a series of case studies on extractive industries across the United States, focusing on coal, copper, gold, iron, natural gas, and oil.
The case study on copper mining in Pima County, Arizona can be found here. The study includes:
- The geology and history of copper mining in Pima County
- Production, revenue, and employment information
- Extensive data sources for interested readers
All of the USEITI case studies can be found here.