# Relationship history for MSHA mine 3304674

Current hierarchy: **James P  Jurgensen II; Jacqueline J  Alf; Jason R  Jurgensen → The Melvin Stone Company LLC → Melvin Stone Ross County 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** James P  Jurgensen → Melvin Stone Ross County Plant; 1999-08-06 to 2018-04-30; source msha-controller-operator-history
- **operator_operates_mine:** WC of Chillicothe, LLC → Melvin Stone Ross County Plant; 2011-07-21 to 2012-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Connie  Wrightsel et al → Melvin Stone Ross County Plant; 2011-07-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Connie  Wrightsel et al → WC of Chillicothe, LLC; 2011-07-21 to 2012-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Fred B  Cox Jr et al → WC of Chillicothe, LLC; 2011-07-21 to 2012-04-08; source msha-controller-operator-history
- **operator_operates_mine:** The Melvin Stone Company LLC → Melvin Stone Ross County Plant; 2012-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen → The Melvin Stone Company LLC; 2012-04-09 to 2018-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Jacqueline J  Alf et al → Melvin Stone Ross County Plant; 2018-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacqueline J  Alf et al → The Melvin Stone Company LLC; 2018-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen II et al → The Melvin Stone Company LLC; 2018-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason R  Jurgensen et al → The Melvin Stone Company LLC; 2018-05-01 to current/open; source msha-controller-operator-history