# Relationship history for MSHA mine 4606496

Current hierarchy: **Harry G  Cooke; Larry David  Cochran → Phil-Matt Mining Company Inc → No 3 Elk Lick**

- 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:** Phil-Matt Mining Company Inc → No 3 Elk Lick; 1981-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harry G  Cooke et al → No 3 Elk Lick; 1981-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harry G  Cooke et al → Phil-Matt Mining Company Inc; 1981-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry David  Cochran et al → Phil-Matt Mining Company Inc; 1981-12-01 to current/open; source msha-controller-operator-history