# Relationship history for MSHA mine 4607203

Current hierarchy: **Patriot Coal Corporation → Eastern Associated Coal Corp → Hernshaw 14 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

- **operator_operates_mine:** Mystic Energy Inc → Hernshaw 14 Mine; 1986-10-01 to 2004-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Cline → Hernshaw 14 Mine; 1986-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Cline → Mystic Energy Inc; 1986-10-01 to 2004-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Hernshaw 14 Mine; 1998-03-26 to 2007-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp → Hernshaw 14 Mine; 2004-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Eastern Associated Coal Corp; 2004-10-15 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Hernshaw 14 Mine; 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