# Relationship history for MSHA mine 4608626

Current hierarchy: **Appalachian Resource Company LLC → APPALACHIAN RESOURCE WEST VIRGINIA, LLC → TUG FORK PREPARATION 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:** Zeigler Coal Holding Company → TUG FORK PREPARATION PLANT; 1985-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Old Ben Coal Company → TUG FORK PREPARATION PLANT; 1997-03-01 to 2005-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Zeigler Coal Holding Company → Old Ben Coal Company; 1997-03-01 to 2005-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Wexford Capital LLC → TUG FORK PREPARATION PLANT; 2003-05-12 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → TUG FORK PREPARATION PLANT; 2004-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** LCC West Virginia, LLC → TUG FORK PREPARATION PLANT; 2005-05-01 to 2007-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC West Virginia, LLC; 2005-05-01 to 2007-12-27; source msha-controller-operator-history
- **operator_operates_mine:** CAM Mining LLC → TUG FORK PREPARATION PLANT; 2007-12-28 to 2020-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LLC → CAM Mining LLC; 2007-12-28 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → TUG FORK PREPARATION PLANT; 2010-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → CAM Mining LLC; 2010-10-05 to 2020-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Resource West Virginia, LLC → TUG FORK PREPARATION PLANT; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Appalachian Resource Company LLC → TUG FORK PREPARATION PLANT; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Appalachian Resource Company LLC → Appalachian Resource West Virginia, LLC; 2020-09-01 to current/open; source msha-controller-operator-history