# Relationship history for MSHA mine 4607414

Current hierarchy: **John B  Preece → West Virginia Mine Power, Inc → Mine No 57**

- 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:** Dick J  Plaster → Mine No 57; 1982-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph C  Turley III et al → Mine No 57; 1987-10-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lafayette Springs Enterprises Inc → Mine No 57; 1987-12-01 to 1989-11-01; source msha-controller-operator-history
- **controller_controls_operator:** Dick J  Plaster → Lafayette Springs Enterprises Inc; 1987-12-01 to 1989-11-01; source msha-controller-operator-history
- **controller_controls_mine:** Michael J  Hudak → Mine No 57; 1988-06-02 to 1992-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Nuco Mining Company Inc → Mine No 57; 1989-11-02 to 1992-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Hudak → Nuco Mining Company Inc; 1989-11-02 to 1992-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Leckie Smokeless Coal Company → Mine No 57; 1992-01-10 to 1997-11-10; source msha-controller-operator-history
- **controller_controls_operator:** Joseph C  Turley III et al → Leckie Smokeless Coal Company; 1992-01-10 to 1997-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Royal Scot Minerals Inc → Mine No 57; 1997-11-11 to 2008-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Rackwood Mineral Holdings Plc → Mine No 57; 1997-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rackwood Mineral Holdings Plc → Royal Scot Minerals Inc; 1997-11-11 to 2008-09-16; source msha-controller-operator-history
- **controller_controls_mine:** John B  Preece → Mine No 57; 2007-01-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Mine Power, Inc → Mine No 57; 2008-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John B  Preece → West Virginia Mine Power, Inc; 2008-09-17 to current/open; source msha-controller-operator-history