# Relationship history for MSHA mine 1514734

Current hierarchy: **Potter Hobert E → Red Ridge Mining Inc → No 1 Strip And Auger**

- 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

- **operator_operates_mine:** Red Ridge Mining Inc → No 1 Strip And Auger; 1984-07-01 to 1985-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Potter Hobert E → No 1 Strip And Auger; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Potter Hobert E → Red Ridge Mining Inc; 1984-07-01 to 1985-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Burn Right Coal Company Inc → No 1 Strip And Auger; 1985-08-23 to 1987-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Childers Elster → No 1 Strip And Auger; 1985-08-23 to 1987-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Childers Elster → Burn Right Coal Company Inc; 1985-08-23 to 1987-04-22; source msha-controller-operator-history
- **operator_operates_mine:** Red Ridge Mining Inc → No 1 Strip And Auger; 1987-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Potter Hobert E → Red Ridge Mining Inc; 1987-04-23 to current/open; source msha-controller-operator-history