# Relationship history for MSHA mine 4405922

Current hierarchy: **Sage Sammy → Travis Coal Inc → No 3 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:** Crouse Estel → No 3 Mine; 1982-02-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sharon Coal Corp → No 3 Mine; 1982-07-01 to 1983-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Crouse Estel → Sharon Coal Corp; 1982-07-01 to 1983-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Pen Mining Corp → No 3 Mine; 1983-09-27 to 1986-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Boyd Roger Dale → No 3 Mine; 1983-09-27 to 1986-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Boyd Roger Dale → Wolf Pen Mining Corp; 1983-09-27 to 1986-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Sage Sammy Et Al → No 3 Mine; 1985-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silver Bullet Coal Company Inc → No 3 Mine; 1986-12-02 to 1988-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Danny → No 3 Mine; 1986-12-02 to 1990-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Danny → Silver Bullet Coal Company Inc; 1986-12-02 to 1988-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Travis Coal Inc → No 3 Mine; 1988-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sage Sammy Et Al → Travis Coal Inc; 1988-06-02 to current/open; source msha-controller-operator-history