# Relationship history for MSHA mine 4608194

Current hierarchy: **Metinvest B V → Carter Roag Coal Company → Pleasant Hill 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:** Romie J  Bailey → Pleasant Hill Mine; 1988-09-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bohica Inc → Pleasant Hill Mine; 1992-07-01 to 1998-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Romie J  Bailey → Bohica Inc; 1992-07-01 to 1998-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Mill Creek Coal Mining Company Inc → Pleasant Hill Mine; 1998-10-05 to 2004-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Ralph Ellis  Stacy → Pleasant Hill Mine; 1998-10-05 to 2004-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Ralph Ellis  Stacy → Mill Creek Coal Mining Company Inc; 1998-10-05 to 2004-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Stacy → Pleasant Hill Mine; 2004-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Stacy → Mill Creek Coal Mining Company Inc; 2004-04-20 to 2004-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Carter Roag Coal Company → Pleasant Hill Mine; 2004-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Pleasant Hill Mine; 2004-10-22 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Carter Roag Coal Company; 2004-10-22 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Pleasant Hill Mine; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Carter Roag Coal Company; 2009-04-30 to current/open; source msha-controller-operator-history