# Relationship history for MSHA mine 4603299

Current hierarchy: **Eastern Gas & Fuel Association → Nu East Mining Corp → Chelyan Surface**

- 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:** Cedar Coal Company → Chelyan Surface; 1950-01-01 to 1984-09-30; source msha-controller-operator-history
- **controller_controls_mine:** American Electric Power Company Inc → Chelyan Surface; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Electric Power Company Inc → Cedar Coal Company; 1950-01-01 to 1984-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Nu East Mining Corp → Chelyan Surface; 1984-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eastern Gas & Fuel Association → Chelyan Surface; 1984-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eastern Gas & Fuel Association → Nu East Mining Corp; 1984-10-01 to current/open; source msha-controller-operator-history