# Hardrock Mining Management: Selected Countries, U.S. States, and Tribes Have Different Governance Structures but Primarily Use Leasing
> **GAO Report** · 2021-06-30 · `gao-21-298`
## Report
- **GAO ID:** gao-21-298
- **Type:** Report
- **Published:** 2021-06-30
## Source
- [GAO product page](https://www.gao.gov/products/gao-21-298)
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