# Relationship history for MSHA mine 3605437

Current hierarchy: **Rupnik Larry → Larry Rupnik → Reclamation Project #692**

- 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:** K & K Coal Company → Reclamation Project #692; 1975-01-15 to 1975-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Kepple Glenn R & Glenn C → Reclamation Project #692; 1975-01-15 to 1975-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Kepple Glenn R & Glenn C → K & K Coal Company; 1975-01-15 to 1975-02-17; source msha-controller-operator-history
- **operator_operates_mine:** Larry Rupnik → Reclamation Project #692; 1975-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rupnik Larry → Reclamation Project #692; 1975-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rupnik Larry → Larry Rupnik; 1975-02-18 to current/open; source msha-controller-operator-history