# Relationship history for MSHA mine 1517747

Current hierarchy: **Talmage D  Meade → Meade & Shepherd Coal Company Inc → Perkins Branch**

- 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:** Talmage D  Meade → Perkins Branch; 1975-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Wells → Perkins Branch; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Perkins Branch; 1996-02-01 to 1996-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Wells → Leslie Resources Inc; 1996-02-01 to 1996-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Meade & Shepherd Coal Company Inc → Perkins Branch; 1996-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Talmage D  Meade → Meade & Shepherd Coal Company Inc; 1996-07-16 to current/open; source msha-controller-operator-history