# Relationship history for MSHA mine 4003560

Current hierarchy: **Juan  Galvez Anaya → Galvez Stone Sales → Galvez Stone Sales**

- 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:** Galvez Stone Sales → Galvez Stone Sales; 2021-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Juan  Galvez Anaya → Galvez Stone Sales; 2021-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Juan  Galvez Anaya → Galvez Stone Sales; 2021-08-12 to current/open; source msha-controller-operator-history