# Relationship history for MSHA mine 0202443

Current hierarchy: **Energy Fuels Inc → EFR Arizona Strip LLC → Arizona #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Harold  Roberts → Arizona #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James S  Redpath → Arizona #1; 1978-03-09 to 2007-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Energy Fuels Nuclear Inc → Arizona #1; 1988-07-01 to 2007-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Harold  Roberts → Energy Fuels Nuclear Inc; 1988-07-01 to 2007-08-31; source msha-controller-operator-history
- **controller_controls_mine:** International Uranium Corp → Arizona #1; 1997-05-10 to 2023-02-12; source msha-controller-operator-history
- **operator_operates_mine:** J.S. Redpath Corporation → Arizona #1; 2007-09-01 to 2009-01-13; source msha-controller-operator-history
- **controller_controls_mine:** Deilmann-Haniel → Arizona #1; 2007-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deilmann-Haniel → J.S. Redpath Corporation; 2007-09-01 to 2009-01-13; source msha-controller-operator-history
- **controller_controls_operator:** James S  Redpath → J.S. Redpath Corporation; 2007-09-01 to 2007-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Energy Fuels Resources (USA) Inc. → Arizona #1; 2009-01-14 to 2025-02-09; source msha-controller-operator-history
- **controller_controls_operator:** International Uranium Corp → Energy Fuels Resources (USA) Inc.; 2009-01-14 to 2023-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Inc → Arizona #1; 2023-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Fuels Inc → Energy Fuels Resources (USA) Inc.; 2023-02-13 to 2025-02-09; source msha-controller-operator-history
- **operator_operates_mine:** EFR Arizona Strip LLC → Arizona #1; 2025-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Inc → Arizona #1; 2025-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Fuels Inc → EFR Arizona Strip LLC; 2025-02-10 to current/open; source msha-controller-operator-history