# Relationship history for MSHA mine 1506760

Current hierarchy: **Sturgill Ann Marie Rose → C & J Mining Company Inc → No 1 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Coffee Cup Coal Company Inc → No 1 Mine; 1973-01-01 to 1991-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Smith Earnest W & Coleman L → No 1 Mine; 1973-01-01 to 1991-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Smith Earnest W & Coleman L → Coffee Cup Coal Company Inc; 1973-01-01 to 1991-04-03; source msha-controller-operator-history
- **operator_operates_mine:** C & J Mining Company Inc → No 1 Mine; 1991-04-04 to 1991-12-09; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Hillman → No 1 Mine; 1991-04-04 to 1991-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Hillman → C & J Mining Company Inc; 1991-04-04 to 1991-12-09; source msha-controller-operator-history
- **operator_operates_mine:** C & J Mining Company Inc → No 1 Mine; 1991-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sturgill Ann Marie Rose → No 1 Mine; 1991-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sturgill Ann Marie Rose → C & J Mining Company Inc; 1991-12-10 to current/open; source msha-controller-operator-history