# Relationship history for MSHA mine 3304711

Current hierarchy: **James P  Jurgensen II; Jacqueline J  Alf; Jason R  Jurgensen → Melvin Stone Co. LLC → Sergeants Plant**

- 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:** James P  Jurgensen → Sergeants Plant; 1999-08-06 to 2018-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Sergeant Stone Inc → Sergeants Plant; 2014-07-18 to 2020-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Claude W  Imler et al → Sergeants Plant; 2014-07-18 to 2014-11-23; source msha-controller-operator-history
- **controller_controls_operator:** Claude W  Imler et al → Sergeant Stone Inc; 2014-07-18 to 2014-11-23; source msha-controller-operator-history
- **controller_controls_operator:** Jeff L  McLean et al → Sergeant Stone Inc; 2014-07-18 to 2014-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Claude W Imler et al → Sergeants Plant; 2014-11-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claude W Imler et al → Sergeant Stone Inc; 2014-11-24 to 2020-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Timothy H Linn et al → Sergeant Stone Inc; 2014-11-24 to 2020-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Ronald F Scurlock et al → Sergeant Stone Inc; 2014-11-24 to 2020-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Jason R  Jurgensen et al → Sergeants Plant; 2018-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CCU Mining LLC. → Sergeants Plant; 2020-08-11 to 2023-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Ungurean → Sergeants Plant; 2020-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Ungurean → CCU Mining LLC.; 2020-08-11 to 2023-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Melvin Stone Co. LLC → Sergeants Plant; 2023-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason R  Jurgensen et al → Melvin Stone Co. LLC; 2023-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen II et al → Melvin Stone Co. LLC; 2023-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacqueline J  Alf et al → Melvin Stone Co. LLC; 2023-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen → Melvin Stone Co. LLC; 2023-06-05 to 2018-04-30; source msha-controller-operator-history