# Relationship history for MSHA mine 4406719

Current hierarchy: **SunCoke Energy Incorporated → Dominion Coal Corporation → Mine No 27**

- 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 27; 1979-10-29 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** James Wayne  Estep → Mine No 27; 1991-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 27; 1992-10-01 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1992-10-01 to 1993-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Warren Coal Company Inc → Mine No 27; 1993-02-08 to 1993-05-20; source msha-controller-operator-history
- **controller_controls_operator:** James Wayne  Estep → Warren Coal Company Inc; 1993-02-08 to 1993-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 27; 1993-05-21 to 1994-04-12; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1993-05-21 to 1994-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Red Baron Inc → Mine No 27; 1994-04-13 to 2000-09-04; source msha-controller-operator-history
- **controller_controls_mine:** Rodney K  Roberts et al → Mine No 27; 1994-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney K  Roberts et al → Red Baron Inc; 1994-04-13 to 2000-09-04; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy D  Dye et al → Red Baron Inc; 1994-04-13 to 2000-09-04; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No 27; 2000-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 2000-09-05 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Mine No 27; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1994-04-12; 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