# Relationship history for MSHA mine 0402542

Current hierarchy: **MP Materials Corporation → MP Mine Operations, LLC. → Mt Pass Mine & Mill**

- 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:** Chevron Corporation → Mt Pass Mine & Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Molycorp Inc → Mt Pass Mine & Mill; 1950-01-01 to 2008-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Unocal Corp → Mt Pass Mine & Mill; 1950-01-01 to 2005-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Unocal Corp → Molycorp Inc; 1950-01-01 to 2005-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Chevron Corporation → Mt Pass Mine & Mill; 2005-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chevron Corporation → Molycorp Inc; 2005-11-30 to 2008-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Chevron Mining Inc → Mt Pass Mine & Mill; 2008-04-02 to 2008-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Chevron Corporation → Chevron Mining Inc; 2008-04-02 to 2008-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Molycorp Minerals → Mt Pass Mine & Mill; 2008-11-07 to 2017-12-10; source msha-controller-operator-history
- **controller_controls_mine:** Traxys North America LLC et al → Mt Pass Mine & Mill; 2008-11-07 to 2010-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Traxys North America LLC et al → Molycorp Minerals; 2008-11-07 to 2010-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Resource Capital Funds et al → Molycorp Minerals; 2008-11-07 to 2010-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Molycorp Inc → Mt Pass Mine & Mill; 2010-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Molycorp Inc → Molycorp Minerals; 2010-07-29 to 2017-12-10; source msha-controller-operator-history
- **operator_operates_mine:** MP Mine Operations, LLC. → Mt Pass Mine & Mill; 2017-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Saratoga Park Ltd et al → Mt Pass Mine & Mill; 2017-12-11 to 2020-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Saratoga Park Ltd et al → MP Mine Operations, LLC.; 2017-12-11 to 2020-11-16; source msha-controller-operator-history
- **controller_controls_operator:** JHL Capital Group Holdings Two LLC et al → MP Mine Operations, LLC.; 2017-12-11 to 2020-11-16; source msha-controller-operator-history
- **controller_controls_mine:** MP Materials Corporation → Mt Pass Mine & Mill; 2020-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MP Materials Corporation → MP Mine Operations, LLC.; 2020-11-17 to current/open; source msha-controller-operator-history