# Relationship history for MSHA mine 4404517

Current hierarchy: **CONSOL Energy Inc → Garden Creek Pocahontas Company → Virginia Pocahontas 6**

- 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

- **operator_operates_mine:** Centennial Constructors Inc → Virginia Pocahontas 6; 1976-09-08 to 1976-11-17; source msha-controller-operator-history
- **controller_controls_mine:** Kiewit Peter Sons' Inc → Virginia Pocahontas 6; 1976-09-08 to 1976-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Kiewit Peter Sons' Inc → Centennial Constructors Inc; 1976-09-08 to 1976-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Garden Creek Pocahontas Company → Virginia Pocahontas 6; 1976-11-18 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → Virginia Pocahontas 6; 1976-11-18 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Garden Creek Pocahontas Company; 1976-11-18 to 1993-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Garden Creek Pocahontas Company → Virginia Pocahontas 6; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Virginia Pocahontas 6; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Garden Creek Pocahontas Company; 1993-07-01 to current/open; source msha-controller-operator-history