# Relationship history for MSHA mine 1800752

Current hierarchy: **Faith  Ritchie; Jody L Ritchie → Beechwood Coal, LLC → Federal 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:** Robert George  Koval → Federal Hill Mine; 1995-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountaineer Mining Corporation → Federal Hill Mine; 2001-07-03 to 2011-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Robert George  Koval → Mountaineer Mining Corporation; 2001-07-03 to 2011-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Jody L  Ritchie → Federal Hill Mine; 2007-11-30 to 2022-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Beechwood Coal, LLC → Federal Hill Mine; 2011-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jody L  Ritchie → Beechwood Coal, LLC; 2011-02-24 to 2022-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Faith  Ritchie et al → Federal Hill Mine; 2022-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Faith  Ritchie et al → Beechwood Coal, LLC; 2022-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jody L Ritchie et al → Beechwood Coal, LLC; 2022-03-16 to current/open; source msha-controller-operator-history