# Relationship history for MSHA mine 4608974

Current hierarchy: **Patriot Coal Corporation → Eastern Associated Coal Corp. → Contract Services Group**

- 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:** Peabody Energy Corporation → Contract Services Group; 1998-03-26 to 2007-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp. → Contract Services Group; 2002-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Eastern Associated Coal Corp.; 2002-10-24 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Contract Services Group; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Eastern Associated Coal Corp.; 2007-10-31 to current/open; source msha-controller-operator-history