# Relationship history for MSHA mine 5400320

Current hierarchy: **Negron Israel → Transporte Negron → TRANSPORTE NEGRON**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Jorge R Camacho → TRANSPORTE NEGRON; 1990-05-01 to 1995-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Camacho Jorge R → TRANSPORTE NEGRON; 1990-05-01 to 1995-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Camacho Jorge R → Jorge R Camacho; 1990-05-01 to 1995-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Transporte Negron → TRANSPORTE NEGRON; 1995-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Negron Israel → TRANSPORTE NEGRON; 1995-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Negron Israel → Transporte Negron; 1995-11-30 to current/open; source msha-controller-operator-history