# Relationship history for MSHA mine 4406758

Current hierarchy: **SunCoke Energy Incorporated → Dominion Coal Corporation → Dominion No 36b**

- 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. → Dominion No 36b; 1979-10-29 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Rick A  Matney  et al → Dominion No 36b; 1991-08-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Dominion No 36b; 1994-04-01 to 1994-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1994-04-01 to 1994-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Rodney K  Roberts et al → Dominion No 36b; 1994-04-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nufac Mining Inc → Dominion No 36b; 1994-11-09 to 1996-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Rick A  Matney  et al → Nufac Mining Inc; 1994-11-09 to 1996-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Hank K  Matney  et al → Nufac Mining Inc; 1994-11-09 to 1996-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Fred D  Matney  et al → Nufac Mining Inc; 1994-11-09 to 1996-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Red Baron Inc → Dominion No 36b; 1996-05-02 to 1999-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Rodney K  Roberts et al → Red Baron Inc; 1996-05-02 to 1999-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy D  Dye et al → Red Baron Inc; 1996-05-02 to 1999-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Dominion No 36b; 1999-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1999-01-15 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Dominion No 36b; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1994-11-08; 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