# Relationship history for MSHA mine 1513023

Current hierarchy: **Buddeke Paul E & Richard L → Southwind Mining Company Inc → Wolf Hill**

- 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

- **controller_controls_mine:** Buddeke Paul E & Richard L Et Al → Wolf Hill; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southwind Mining Company Inc → Wolf Hill; 1981-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Buddeke Paul E & Richard L Et Al → Southwind Mining Company Inc; 1981-05-01 to current/open; source msha-controller-operator-history