# Relationship history for MSHA mine 1513383

Current hierarchy: **Vaughn Earl → Laurel Lady Mining Inc → No 1 Strip**

- 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:** W C Mining Company Inc → No 1 Strip; 1982-03-01 to 1982-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Reese Darrel → No 1 Strip; 1982-03-01 to 1982-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Reese Darrel → W C Mining Company Inc; 1982-03-01 to 1982-12-14; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Lady Mining Inc → No 1 Strip; 1982-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vaughn Earl → No 1 Strip; 1982-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vaughn Earl → Laurel Lady Mining Inc; 1982-12-15 to current/open; source msha-controller-operator-history