# Relationship history for MSHA mine 4105003

Current hierarchy: **Alfredo  Reza → Camino Real → Camino Real**

- 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

- **operator_operates_mine:** Cornerstone Quarry Company → Camino Real; 2013-02-25 to 2018-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Antonio  Almaguer → Camino Real; 2013-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonio  Almaguer → Cornerstone Quarry Company; 2013-02-25 to 2018-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Camino Real → Camino Real; 2018-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alfredo  Reza → Camino Real; 2018-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alfredo  Reza → Camino Real; 2018-03-15 to current/open; source msha-controller-operator-history