# Relationship history for MSHA mine 2901270

Current hierarchy: **Freeport-McMoRan Inc → Freeport-McMoRan Chino Mines Company → Lime Quarry and Lime Plant**

- 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

- **operator_operates_mine:** Kennecott Minerals Company → Lime Quarry and Lime Plant; 1950-01-01 to 1981-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Kennecott Copper Corp → Lime Quarry and Lime Plant; 1950-01-01 to 1981-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Kennecott Copper Corp → Kennecott Minerals Company; 1950-01-01 to 1981-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Monty P  Nichols → Lime Quarry and Lime Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chino Mines Company → Lime Quarry and Lime Plant; 1981-03-02 to 1988-03-22; source msha-controller-operator-history
- **controller_controls_mine:** Kennecott Corp & Mitsubishi Corp → Lime Quarry and Lime Plant; 1981-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kennecott Corp & Mitsubishi Corp → Chino Mines Company; 1981-03-02 to 1988-03-22; source msha-controller-operator-history
- **controller_controls_mine:** Mitsubishi Corp & Phelps Dodge Corp → Lime Quarry and Lime Plant; 1987-01-01 to 2003-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Triple Nichol Inc → Lime Quarry and Lime Plant; 1988-03-23 to 2010-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Monty P  Nichols → Triple Nichol Inc; 1988-03-23 to 2010-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Phelps Dodge Corp → Lime Quarry and Lime Plant; 2004-01-01 to 2007-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Freeport-McMoRan Inc → Lime Quarry and Lime Plant; 2007-03-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Freeport-McMoRan Chino Mines Company → Lime Quarry and Lime Plant; 2010-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freeport-McMoRan Inc → Freeport-McMoRan Chino Mines Company; 2010-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phelps Dodge Corp → Freeport-McMoRan Chino Mines Company; 2010-06-01 to 2007-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Mitsubishi Corp & Phelps Dodge Corp → Freeport-McMoRan Chino Mines Company; 2010-06-01 to 2003-12-31; source msha-controller-operator-history