# Relationship history for MSHA mine 4607597

Current hierarchy: **Deel Thomas G & Bill → K Y V Coal Company Inc → Mine No 2**

- 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:** Larry  Phillips → Mine No 2; 1987-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elite Mining Company Inc → Mine No 2; 1988-10-01 to 1989-12-10; source msha-controller-operator-history
- **controller_controls_mine:** Owens George → Mine No 2; 1988-10-01 to 1989-12-10; source msha-controller-operator-history
- **controller_controls_operator:** Owens George → Elite Mining Company Inc; 1988-10-01 to 1989-12-10; source msha-controller-operator-history
- **operator_operates_mine:** Mouthcard Development Company Inc → Mine No 2; 1989-12-11 to 1991-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Phillips → Mouthcard Development Company Inc; 1989-12-11 to 1991-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Deel Thomas G & Bill → Mine No 2; 1990-07-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K Y V Coal Company Inc → Mine No 2; 1991-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deel Thomas G & Bill → K Y V Coal Company Inc; 1991-03-01 to current/open; source msha-controller-operator-history