# Relationship history for MSHA mine 5400165

Current hierarchy: **Luis A  Reyes-Leon → Hiram Rivera Inc → Cantera Rivera**

- 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:** Conrado Forestier Jr → Cantera Rivera; 1950-01-01 to 1979-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Conrado  Forestier Jr → Cantera Rivera; 1950-01-01 to 1979-05-24; source msha-controller-operator-history
- **controller_controls_operator:** Conrado  Forestier Jr → Conrado Forestier Jr; 1950-01-01 to 1979-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Hiram Rivera Inc → Cantera Rivera; 1979-05-25 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Hiram  Rivera → Cantera Rivera; 1979-05-25 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Hiram  Rivera → Hiram Rivera Inc; 1979-05-25 to 1999-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Hiram Rivera Inc → Cantera Rivera; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luis A  Reyes-Leon → Cantera Rivera; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luis A  Reyes-Leon → Hiram Rivera Inc; 1999-12-01 to current/open; source msha-controller-operator-history