# Relationship history for MSHA mine 4200472

Current hierarchy: **Consolidated Uranium Inc → CUR Sage Plain Uranium LLC → Rim 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Atlas Corp → Rim Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Union Carbide Corp → Rim Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** F & F Mendisco Mining Company → Rim Mine; 1950-01-01 to 1981-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Mendisco Felix → Rim Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mendisco Felix → F & F Mendisco Mining Company; 1950-01-01 to 1981-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Atlas Minerals → Rim Mine; 1981-11-03 to 1989-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Atlas Corp → Atlas Minerals; 1981-11-03 to 1989-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Reams John → Rim Mine; 1988-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Reams Construction Company → Rim Mine; 1989-04-11 to 1992-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Reams John → Reams Construction Company; 1989-04-11 to 1992-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Butt Jim C → Rim Mine; 1989-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Umetco Minerals Corp → Rim Mine; 1992-01-02 to 1998-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Union Carbide Corp → Umetco Minerals Corp; 1992-01-02 to 1998-01-15; source msha-controller-operator-history
- **controller_controls_mine:** International Uranium Corp → Rim Mine; 1997-05-10 to 2023-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Jim C Butt → Rim Mine; 1998-01-16 to 2005-12-22; source msha-controller-operator-history
- **controller_controls_operator:** Butt Jim C → Jim C Butt; 1998-01-16 to 2005-12-22; source msha-controller-operator-history
- **operator_operates_mine:** Energy Fuels Resources (USA) Inc. → Rim Mine; 2005-12-23 to 2022-10-20; source msha-controller-operator-history
- **controller_controls_operator:** International Uranium Corp → Energy Fuels Resources (USA) Inc.; 2005-12-23 to 2022-10-20; source msha-controller-operator-history
- **operator_operates_mine:** CUR Sage Plain Uranium LLC → Rim Mine; 2022-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Consolidated Uranium Inc → Rim Mine; 2022-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Uranium Inc → CUR Sage Plain Uranium LLC; 2022-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Inc → Rim Mine; 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 2022-10-20; source msha-controller-operator-history