# Relationship history for MSHA mine 4405254

Current hierarchy: **SunCoke Energy Incorporated → Dominion Coal Corporation → Dominion No 1**

- 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

- **operator_operates_mine:** Cove Creek Coal Company Inc → Dominion No 1; 1979-07-01 to 1986-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Waddell Richard S → Dominion No 1; 1979-07-01 to 1986-07-16; source msha-controller-operator-history
- **controller_controls_operator:** Waddell Richard S → Cove Creek Coal Company Inc; 1979-07-01 to 1986-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Sunoco, Inc. → Dominion No 1; 1979-10-29 to 2012-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Dominion No 1; 1986-07-17 to 1992-12-16; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1986-07-17 to 1992-12-16; source msha-controller-operator-history
- **operator_operates_mine:** Key West Mining Inc → Dominion No 1; 1992-12-17 to 1993-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Noah L  Vandyke → Dominion No 1; 1992-12-17 to 1996-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Noah L  Vandyke → Key West Mining Inc; 1992-12-17 to 1993-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Coal Corporation → Dominion No 1; 1993-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Dominion Coal Corporation; 1993-05-20 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Dominion No 1; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Dominion Coal Corporation; 2012-01-17 to 1992-12-16; 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