# Relationship history for MSHA mine 1800724

Current hierarchy: **Richard  Marple; Regina  Marple → Deer Haven Farms, LLC → Steyer**

- 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:** Anker Group Inc → Steyer; 1990-07-17 to 2005-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Anker West Virginia Mining Company Inc → Steyer; 1991-01-01 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Anker Group Inc → Anker West Virginia Mining Company Inc; 1991-01-01 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Anker Group Inc → Steyer; 1997-02-10 to 2005-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Steyer Fuel Inc → Steyer; 1999-04-12 to 2003-03-10; source msha-controller-operator-history
- **controller_controls_mine:** David M  Maynard → Steyer; 1999-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David M  Maynard → Steyer Fuel Inc; 1999-04-12 to 2003-03-10; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Run Mining Company → Steyer; 2003-03-11 to 2012-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Anker Group Inc → Wolf Run Mining Company; 2003-03-11 to 2005-05-31; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Steyer; 2005-06-01 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → Anker West Virginia Mining Company Inc; 2005-06-01 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → Wolf Run Mining Company; 2005-06-01 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Steyer; 2005-11-18 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Steyer; 2011-06-15 to 2025-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → Anker West Virginia Mining Company Inc; 2011-06-15 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → Wolf Run Mining Company; 2011-06-15 to 2012-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Steyer; 2011-06-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vindex Energy LLC → Steyer; 2012-02-10 to 2017-02-02; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → Vindex Energy LLC; 2012-02-10 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Anker Group Inc → Vindex Energy LLC; 2012-02-10 to 2005-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → Vindex Energy LLC; 2012-02-10 to 2017-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Deer Haven Farms, LLC → Steyer; 2017-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Regina  Marple et al → Steyer; 2017-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Regina  Marple et al → Deer Haven Farms, LLC; 2017-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Marple et al → Deer Haven Farms, LLC; 2017-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Core Natural Resources Inc → Steyer; 2025-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Core Natural Resources Inc → Anker West Virginia Mining Company Inc; 2025-01-14 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Core Natural Resources Inc → Wolf Run Mining Company; 2025-01-14 to 2012-02-09; source msha-controller-operator-history