# Relationship history for MSHA mine 1510167

Current hierarchy: **Ousley Cecil D → Wolf Pen Coals Inc → No 13 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:** Childers George → No 13 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leonard  Hall → No 13 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ousley Cecil D → No 13 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L & H Coal Company → No 13 Mine; 1977-01-01 to 1977-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Hall → L & H Coal Company; 1977-01-01 to 1977-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Childers Coal Company → No 13 Mine; 1977-05-01 to 1978-05-24; source msha-controller-operator-history
- **controller_controls_operator:** Childers George → Childers Coal Company; 1977-05-01 to 1978-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Pen Coals Inc → No 13 Mine; 1978-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ousley Cecil D → Wolf Pen Coals Inc; 1978-05-25 to current/open; source msha-controller-operator-history