# Relationship history for MSHA mine 4404212

Current hierarchy: **Metinvest B V → Wellmore Coal Company, LLC → #7 Prep 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:** United  Company → #7 Prep Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wellmore Coal Corp → #7 Prep Plant; 1975-12-15 to 1997-08-25; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Wellmore Coal Corp; 1975-12-15 to 1997-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Wellmore Coal Corp → #7 Prep Plant; 1997-08-26 to 1998-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → #7 Prep Plant; 1997-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Wellmore Coal Corp; 1997-08-26 to 1998-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Wellmore Coal Corp → #7 Prep Plant; 1998-02-09 to 2000-01-12; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth L  Stacy → #7 Prep Plant; 1998-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Stacy → Wellmore Coal Corp; 1998-02-09 to 2000-01-12; source msha-controller-operator-history
- **operator_operates_mine:** Wellmore Coal Company, LLC → #7 Prep Plant; 2000-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Southern Mining Co → #7 Prep Plant; 2000-01-13 to 2006-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Southern Mining Co → Wellmore Coal Company, LLC; 2000-01-13 to 2006-01-01; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → #7 Prep Plant; 2006-01-02 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Wellmore Coal Company, LLC; 2006-01-02 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → #7 Prep Plant; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Wellmore Coal Company, LLC; 2009-04-30 to current/open; source msha-controller-operator-history