# Relationship history for MSHA mine 1518864

Current hierarchy: **Kevin R Yonts → Vision Coal, Inc. → Mine #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Dennis Creg  Yonts → Mine #2; 2004-05-06 to 2007-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin  Hampton → Mine #2; 2004-09-21 to 2006-04-24; source msha-controller-operator-history
- **operator_operates_mine:** H & Q Coal Inc → Mine #2; 2005-04-19 to 2007-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Hampton → H & Q Coal Inc; 2005-04-19 to 2006-04-24; source msha-controller-operator-history
- **controller_controls_mine:** Mark E  Daugherty → Mine #2; 2006-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Daugherty → H & Q Coal Inc; 2006-04-25 to 2007-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Up & Running Coal Company Inc. → Mine #2; 2007-04-12 to 2007-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Clyde D  Fields → Mine #2; 2007-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde D  Fields → Up & Running Coal Company Inc.; 2007-04-12 to 2007-04-19; source msha-controller-operator-history
- **operator_operates_mine:** H & Q Coal Inc. → Mine #2; 2007-04-20 to 2007-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Daugherty → H & Q Coal Inc.; 2007-04-20 to 2007-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Hampton → H & Q Coal Inc.; 2007-04-20 to 2006-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Vision Coal, Inc. → Mine #2; 2007-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis Creg  Yonts → Vision Coal, Inc.; 2007-09-12 to 2007-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Kevin R Yonts → Mine #2; 2007-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin R Yonts → Vision Coal, Inc.; 2007-09-12 to current/open; source msha-controller-operator-history