# Relationship history for MSHA mine 5400397

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

- 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:** Venta Arenas Inc → Arenero Comerio; 1997-05-01 to 2000-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Erazo Jose Tirado → Arenero Comerio; 1997-05-01 to 2000-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Erazo Jose Tirado → Venta Arenas Inc; 1997-05-01 to 2000-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Venta Arena Inc → Arenero Comerio; 2000-03-21 to 2020-10-12; source msha-controller-operator-history
- **controller_controls_mine:** William  Torrech → Arenero Comerio; 2000-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Torrech → Venta Arena Inc; 2000-03-21 to 2020-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Hector  Rodriguez → Arenero Comerio; 2015-12-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Comerio Sand and Gravel Corp → Arenero Comerio; 2020-10-13 to 2025-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Rafael  Reyes → Arenero Comerio; 2020-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rafael  Reyes → Comerio Sand and Gravel Corp; 2020-10-13 to 2025-09-29; source msha-controller-operator-history
- **operator_operates_mine:** CONTRERAS LAND DEVELOPERS & CONTRACTORS → Arenero Comerio; 2025-09-30 to 2026-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Alberto Contreras  Tavarez → Arenero Comerio; 2025-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alberto Contreras  Tavarez → CONTRERAS LAND DEVELOPERS & CONTRACTORS; 2025-09-30 to 2026-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Gravero Rodriguez → Arenero Comerio; 2026-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hector  Rodriguez → Gravero Rodriguez; 2026-05-18 to current/open; source msha-controller-operator-history