# Relationship history for MSHA mine 3610184

Current hierarchy: **Enrique E  Vasquez → Vasquez Stone Supply LLC → Shimer Quarry**

- 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

- **controller_controls_mine:** Enrique E  Vasquez → Shimer Quarry; 2014-10-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vasquez Stone Supply LLC → Shimer Quarry; 2016-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Enrique E  Vasquez → Vasquez Stone Supply LLC; 2016-04-27 to current/open; source msha-controller-operator-history