# Relationship history for MSHA mine 4605124

Current hierarchy: **American Electric Power Company Inc → Southern Appalachian Coal Company → Five Block No 3 Mine**

- 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:** American Electric Power Company Inc → Five Block No 3 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southern Appalachian Coal Company → Five Block No 3 Mine; 1976-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Electric Power Company Inc → Southern Appalachian Coal Company; 1976-05-14 to current/open; source msha-controller-operator-history