# Relationship history for MSHA mine 4406718

Current hierarchy: **SunCoke Energy Incorporated → Dominion Coal Corporation → Mine No. 26**

- 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:** Sunoco, Inc. → Mine No. 26; 1979-10-29 to 2012-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No. 26; 1992-11-01 to 2006-06-21; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1992-11-01 to 2006-06-21; source msha-controller-operator-history
- **controller_controls_mine:** Kres B  VanDyke → Mine No. 26; 2005-10-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vandyke Mining, Inc. → Mine No. 26; 2006-06-22 to 2007-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Kres B  VanDyke → Vandyke Mining, Inc.; 2006-06-22 to 2007-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Mine No. 26; 2007-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 2007-04-12 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Mine No. 26; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 2006-06-21; 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