# Relationship history for MSHA mine 4605372

Current hierarchy: **Wood Philip R → Wildcat Coal Company Inc → Leatherhead #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Mc Kenzie Jay R → Leatherhead #2; 1976-07-01 to 1977-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Mc Kenzie Mining Company Inc → Leatherhead #2; 1976-09-30 to 1977-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kenzie Jay R → Mc Kenzie Mining Company Inc; 1976-09-30 to 1977-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Mc Kenzie Mining Company Inc → Leatherhead #2; 1977-04-01 to 1979-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Mc Cann John H & John W Benson → Leatherhead #2; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Cann John H & John W Benson → Mc Kenzie Mining Company Inc; 1977-04-01 to 1979-04-19; source msha-controller-operator-history
- **operator_operates_mine:** Mc Kenzie Mining Company Inc → Leatherhead #2; 1979-04-20 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Morgan Jack & Eddie → Leatherhead #2; 1979-04-20 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Morgan Jack & Eddie → Mc Kenzie Mining Company Inc; 1979-04-20 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Mc Kenzie Mining Company Inc → Leatherhead #2; 1980-01-01 to 1980-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Mc Kee Kenneth Et Al → Leatherhead #2; 1980-01-01 to 1980-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kee Kenneth Et Al → Mc Kenzie Mining Company Inc; 1980-01-01 to 1980-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Wildcat Coal Company Inc → Leatherhead #2; 1980-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wood Philip R → Leatherhead #2; 1980-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wood Philip R → Wildcat Coal Company Inc; 1980-10-06 to current/open; source msha-controller-operator-history