# Relationship history for MSHA mine 4608634

Current hierarchy: **Patriot Coal Corporation → Remington LLC → Stockburg #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:** Remington Coal Company Inc → Stockburg #1; 1997-04-01 to 2003-07-02; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Cline → Stockburg #1; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Cline → Remington Coal Company Inc; 1997-04-01 to 2003-07-02; source msha-controller-operator-history
- **operator_operates_mine:** Remington LLC → Stockburg #1; 2003-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Magnum Coal Company → Stockburg #1; 2003-07-03 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Magnum Coal Company → Remington LLC; 2003-07-03 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Stockburg #1; 2008-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Remington LLC; 2008-07-23 to current/open; source msha-controller-operator-history