The U.S. Department of the Interior's Office of Natural Resources Revenue, Information and Data Management 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 iron mining in St. Louis County, Minnesota can be found here. The study includes:
- The geology and history of iron mining in St. Louis County
- Production and employment information
- State costs and revenues from the industry
- Extensive data sources for interested readers
All of the natural resources case studies can be found here.
Source: U.S. Department of the Interior.