# Relationship history for MSHA mine 3603012

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

- 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:** Adam Eidemiller Inc → Bovard Strip; 1950-01-01 to 1981-01-18; source msha-controller-operator-history
- **controller_controls_mine:** Eidemiller Wilmer P → Bovard Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eidemiller Wilmer P → Adam Eidemiller Inc; 1950-01-01 to 1981-01-18; source msha-controller-operator-history
- **operator_operates_mine:** C C L Processing Company → Bovard Strip; 1981-01-19 to 1984-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Ronald → Bovard Strip; 1981-01-19 to 1984-06-24; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Ronald → C C L Processing Company; 1981-01-19 to 1984-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Bovard Processing Company → Bovard Strip; 1984-06-25 to 1995-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Letso Robert → Bovard Strip; 1984-06-25 to 1995-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Letso Robert → Bovard Processing Company; 1984-06-25 to 1995-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Bovard Processing Acquisitions Inc → Bovard Strip; 1995-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John H  Munjack → Bovard Strip; 1995-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Munjack → Bovard Processing Acquisitions Inc; 1995-11-13 to current/open; source msha-controller-operator-history