# Relationship history for MSHA mine 2900762

Current hierarchy: **Freeport-McMoRan Inc → Freeport-McMoRan Chino Mines Company → SX-EW**

- 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:** Luck Mining Company → SX-EW; 1950-01-01 to 1988-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Lurline B  Roth → SX-EW; 1950-01-01 to 1988-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Lurline B  Roth → Luck Mining Company; 1950-01-01 to 1988-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Mitsubishi Corp & Phelps Dodge Corp → SX-EW; 1987-01-01 to 2003-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Freeport-McMoRan Chino Mines Company → SX-EW; 1988-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mitsubishi Corp & Phelps Dodge Corp → Freeport-McMoRan Chino Mines Company; 1988-08-12 to 2003-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Phelps Dodge Corp → SX-EW; 2004-01-01 to 2007-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Phelps Dodge Corp → Freeport-McMoRan Chino Mines Company; 2004-01-01 to 2007-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Freeport-McMoRan Inc → SX-EW; 2007-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freeport-McMoRan Inc → Freeport-McMoRan Chino Mines Company; 2007-03-19 to current/open; source msha-controller-operator-history