# Relationship history for MSHA mine 4608937

Current hierarchy: **James  Taylor; Coy  Taylor → Chad Coal Corporation → Wolfpen Mine**

- 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:** James  Taylor et al → Wolfpen Mine; 1984-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sunoco, Inc. → Wolfpen Mine; 1994-09-01 to 2012-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Vansant Coal Corporation → Wolfpen Mine; 2001-12-11 to 2002-12-10; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Vansant Coal Corporation; 2001-12-11 to 2002-12-10; source msha-controller-operator-history
- **operator_operates_mine:** Chad Coal Corporation → Wolfpen Mine; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Taylor et al → Chad Coal Corporation; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coy  Taylor et al → Chad Coal Corporation; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Wolfpen Mine; 2012-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Vansant Coal Corporation; 2012-01-17 to 2002-12-10; source msha-controller-operator-history