# Relationship history for MSHA mine 3608840

Current hierarchy: **John H  Munjack → Bovard Processing Acquisitions Inc → Kepple Pile**

- 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:** John H  Munjack → Kepple Pile; 1995-11-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bovard Processing Acquisitions Inc → Kepple Pile; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Munjack → Bovard Processing Acquisitions Inc; 2000-01-01 to current/open; source msha-controller-operator-history