# Relationship history for MSHA mine 3608308

Current hierarchy: **Null James Sr → Royal Reclamation Inc → Helen Site**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Null James Sr Et Al → Helen Site; 1990-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Royal Reclamation Inc → Helen Site; 1991-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Null James Sr Et Al → Royal Reclamation Inc; 1991-11-01 to current/open; source msha-controller-operator-history