# Relationship history for MSHA mine 3609987

Current hierarchy: **John D  Reynen → Guild Flagstone II → O'Dell 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

- **operator_operates_mine:** Guild Flagstone → O'Dell Quarry; 2012-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John D  Reynen → O'Dell Quarry; 2012-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D  Reynen → Guild Flagstone; 2012-02-08 to current/open; source msha-controller-operator-history