# Relationship history for MSHA mine 5400078

Current hierarchy: **Hector  Rodriguez → Gravero Rodriguez → Gravero Rodriguez**

- 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:** South Puerto Rico Aggregates Corp → Gravero Rodriguez; 1950-01-01 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Jose A  Vallejo → Gravero Rodriguez; 1950-01-01 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Jose A  Vallejo → South Puerto Rico Aggregates Corp; 1950-01-01 to 1989-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Community Aggregates Inc → Gravero Rodriguez; 1989-02-14 to 1999-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Raul  Candelario → Gravero Rodriguez; 1989-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raul  Candelario → Community Aggregates Inc; 1989-02-14 to 1999-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Penuelas Aggregates Corp → Gravero Rodriguez; 1999-10-04 to 2015-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Jose Luis  Torres → Gravero Rodriguez; 1999-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose Luis  Torres → Penuelas Aggregates Corp; 1999-10-04 to 2015-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Gravero Rodriguez → Gravero Rodriguez; 2015-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hector  Rodriguez → Gravero Rodriguez; 2015-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hector  Rodriguez → Gravero Rodriguez; 2015-12-22 to current/open; source msha-controller-operator-history