# Relationship history for MSHA mine 4201527

Current hierarchy: **Anfield Energy Inc → Anfield Resources Holding Corp. → Velvet Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Atlas Corp → Velvet Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Atlas Minerals → Velvet Mine; 1978-03-09 to 1994-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Atlas Corp → Atlas Minerals; 1978-03-09 to 1994-08-29; source msha-controller-operator-history
- **operator_operates_mine:** U S Energy Corp → Velvet Mine; 1994-08-30 to 2008-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Rtz-Cra Group & U S Energy/Crested Corp → Velvet Mine; 1994-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rtz-Cra Group & U S Energy/Crested Corp → U S Energy Corp; 1994-08-30 to 2008-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Uranium One Exploration Inc. → Velvet Mine; 2008-10-09 to 2025-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Uranium One Inc → Velvet Mine; 2008-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Uranium One Inc → Uranium One Exploration Inc.; 2008-10-09 to 2025-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Anfield Resources Holding Corp. → Velvet Mine; 2025-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anfield Energy Inc → Velvet Mine; 2025-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anfield Energy Inc → Anfield Resources Holding Corp.; 2025-07-01 to current/open; source msha-controller-operator-history