# Relationship history for MSHA mine 4201276

Current hierarchy: **American Electric Power Company Inc → Price River Coal Company → Price River No 7 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:** Mc Culloch Oil Corp → Price River No 7 Mine; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Braztah Corp → Price River No 7 Mine; 1976-01-12 to 1979-12-03; source msha-controller-operator-history
- **controller_controls_operator:** Mc Culloch Oil Corp → Braztah Corp; 1976-01-12 to 1979-12-03; source msha-controller-operator-history
- **operator_operates_mine:** Price River Coal Company → Price River No 7 Mine; 1979-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** American Electric Power Company Inc → Price River No 7 Mine; 1979-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Electric Power Company Inc → Price River Coal Company; 1979-12-04 to current/open; source msha-controller-operator-history