# Relationship history for MSHA mine 5400426

Current hierarchy: **Luis  Avalo → Gravero Candelero → GRAVERO CANDELERO**

- 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:** Gravero Candelero → GRAVERO CANDELERO; 1999-09-01 to 2000-03-02; source msha-controller-operator-history
- **controller_controls_mine:** Ernesto  Arsuaga (Tirado) → GRAVERO CANDELERO; 1999-09-01 to 2000-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Ernesto  Arsuaga (Tirado) → Gravero Candelero; 1999-09-01 to 2000-03-02; source msha-controller-operator-history
- **operator_operates_mine:** L A 1 Inc → GRAVERO CANDELERO; 2000-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luis  Avalo → GRAVERO CANDELERO; 2000-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luis  Avalo → L A 1 Inc; 2000-03-03 to current/open; source msha-controller-operator-history