# Relationship history for MSHA mine 4608588

Current hierarchy: **Patriot Coal Corporation → Day LLC → Cedar Grove 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:** Chris  Cline → Cedar Grove Mine; 1996-05-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Day Mining Inc → Cedar Grove Mine; 1996-09-01 to 2003-07-02; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Cline → Day Mining Inc; 1996-09-01 to 2003-07-02; source msha-controller-operator-history
- **operator_operates_mine:** Day LLC → Cedar Grove Mine; 2003-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rainbow Trout Coal LLC → Cedar Grove Mine; 2003-07-03 to 2006-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Rainbow Trout Coal LLC → Day LLC; 2003-07-03 to 2006-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Magnum Coal Company → Cedar Grove Mine; 2006-03-18 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Magnum Coal Company → Day LLC; 2006-03-18 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Cedar Grove Mine; 2008-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Day LLC; 2008-07-23 to current/open; source msha-controller-operator-history