# Relationship history for MSHA mine 4606329

Current hierarchy: **Randy W  Burke → Tanglewood Energy Inc → Tanglewood No 2**

- 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

- **controller_controls_mine:** Lanager Thomas R → Tanglewood No 2; 1979-10-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chestnut Ridge Coal Corp → Tanglewood No 2; 1981-05-01 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Lanager Thomas R → Chestnut Ridge Coal Corp; 1981-05-01 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Randy W  Burke → Tanglewood No 2; 1989-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stone Mountain Coal Company Inc → Tanglewood No 2; 1990-12-03 to 1992-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Ball Roger L Sr → Tanglewood No 2; 1990-12-03 to 1992-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Ball Roger L Sr → Stone Mountain Coal Company Inc; 1990-12-03 to 1992-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Tanglewood Energy Inc → Tanglewood No 2; 1992-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy W  Burke → Tanglewood Energy Inc; 1992-10-01 to current/open; source msha-controller-operator-history