# Relationship history for MSHA mine 5400079

Current hierarchy: **Leon Jose M → Ciales Aggregates → Ciales Aggregates**

- 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:** Gravarena Inc → Ciales Aggregates; 1950-01-01 to 1987-01-12; source msha-controller-operator-history
- **controller_controls_mine:** Lopez Ariel → Ciales Aggregates; 1950-01-01 to 1987-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Lopez Ariel → Gravarena Inc; 1950-01-01 to 1987-01-12; source msha-controller-operator-history
- **operator_operates_mine:** Air Supply Inc → Ciales Aggregates; 1987-01-13 to 1987-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Martinez Ramon & Irene Garcia Et Al → Ciales Aggregates; 1987-01-13 to 1987-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Martinez Ramon & Irene Garcia Et Al → Air Supply Inc; 1987-01-13 to 1987-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Ciales Aggregates → Ciales Aggregates; 1987-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leon Jose M → Ciales Aggregates; 1987-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leon Jose M → Ciales Aggregates; 1987-06-26 to current/open; source msha-controller-operator-history