# Relationship history for MSHA mine 3607632

Current hierarchy: **Herring Rolland & Harry Lee → Rolland Herring & Harry Lee → Herring 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:** Rolland Herring & Harry Lee → Herring Mine; 1984-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Herring Rolland & Harry Lee → Herring Mine; 1984-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Herring Rolland & Harry Lee → Rolland Herring & Harry Lee; 1984-10-01 to current/open; source msha-controller-operator-history