# Relationship history for MSHA mine 4105844

Current hierarchy: **Gerardo  Quinonez → gerardo quinonez → naranjo sand pit**

- 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:** gerardo quinonez → naranjo sand pit; 2026-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gerardo  Quinonez → naranjo sand pit; 2026-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerardo  Quinonez → gerardo quinonez; 2026-01-28 to current/open; source msha-controller-operator-history