# Relationship history for MSHA mine 4405923

Current hierarchy: **SunCoke Energy Incorporated → Dominion Coal Corporation → Mine No 25**

- 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:** Sunoco, Inc. → Mine No 25; 1979-10-29 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Bobby R → Mine No 25; 1981-12-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Double B Mining Company Inc → Mine No 25; 1982-07-01 to 1984-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Bobby R → Double B Mining Company Inc; 1982-07-01 to 1984-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Double B Mining Inc → Mine No 25; 1984-09-27 to 1991-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Smith Glen A → Mine No 25; 1984-09-27 to 1991-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Smith Glen A → Double B Mining Inc; 1984-09-27 to 1991-07-28; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 25; 1991-07-29 to 1992-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1991-07-29 to 1992-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Rat Contractors Inc → Mine No 25; 1992-11-09 to 1993-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Farmer Jennifer → Mine No 25; 1992-11-09 to 1993-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Farmer Jennifer → Rat Contractors Inc; 1992-11-09 to 1993-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Noah L  Vandyke → Mine No 25; 1992-12-17 to 1996-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Key West Mining Inc → Mine No 25; 1993-04-15 to 1996-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Noah L  Vandyke → Key West Mining Inc; 1993-04-15 to 1996-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Robert P  Ratliff → Mine No 25; 1995-10-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 25; 1996-01-04 to 1997-10-08; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1996-01-04 to 1997-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Rat Contractors Inc → Mine No 25; 1997-10-09 to 1998-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Robert P  Ratliff → Rat Contractors Inc; 1997-10-09 to 1998-02-23; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 25; 1998-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1998-02-24 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Mine No 25; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1992-11-08; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1997-10-08; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to current/open; source msha-controller-operator-history