# Relationship history for MSHA mine 4105270

Current hierarchy: **Adrian  Perez → Perez Stone → Perez Mine**

- 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:** Perez Stone → Perez Mine; 2017-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adrian  Perez → Perez Mine; 2017-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adrian  Perez → Perez Stone; 2017-06-15 to current/open; source msha-controller-operator-history