# Relationship history for MSHA mine 4608964

Current hierarchy: **Fredrick J  Murell → Wolf Creek Coal Corp LLC → Feds Creek #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:** Springfield Coal Company → Feds Creek #1; 2002-06-15 to 2004-07-12; source msha-controller-operator-history
- **controller_controls_mine:** John R  Kortas → Feds Creek #1; 2002-06-15 to 2004-02-17; source msha-controller-operator-history
- **controller_controls_operator:** John R  Kortas → Springfield Coal Company; 2002-06-15 to 2004-02-17; source msha-controller-operator-history
- **controller_controls_mine:** David W  Moran et al → Feds Creek #1; 2004-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David W  Moran et al → Springfield Coal Company; 2004-02-18 to 2004-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Noreen C  Moran et al → Springfield Coal Company; 2004-02-18 to 2004-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Pen Coal Corporation of Kentucky LLC → Feds Creek #1; 2004-07-13 to 2011-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Fredrick J  Murell → Feds Creek #1; 2004-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick J  Murell → Wolf Pen Coal Corporation of Kentucky LLC; 2004-07-13 to 2011-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Fredrick J  Murell → Feds Creek #1; 2005-07-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Creek Coal Corp LLC → Feds Creek #1; 2011-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick J  Murell → Wolf Creek Coal Corp LLC; 2011-02-10 to current/open; source msha-controller-operator-history