# Relationship history for MSHA mine 1202063

Current hierarchy: **Peabody Energy Corporation → Peabody Midwest Mining, LLC → Viking Mine - Knox Pit**

- 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:** Cyprus Amax Minerals Company → Viking Mine - Knox Pit; 1987-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Beech Coal Company → Viking Mine - Knox Pit; 1990-02-01 to 1998-06-28; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Beech Coal Company; 1990-02-01 to 1998-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Viking Mine - Knox Pit; 1997-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Beech Coal Company → Viking Mine - Knox Pit; 1998-06-29 to 2004-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Viking Mine - Knox Pit; 1998-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Beech Coal Company; 1998-06-29 to 2004-09-30; source msha-controller-operator-history
- **operator_operates_mine:** LCC Indiana, LLC → Viking Mine - Knox Pit; 2004-10-01 to 2005-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → Viking Mine - Knox Pit; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC Indiana, LLC; 2004-10-01 to 2005-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Peabody Midwest Mining, LLC → Viking Mine - Knox Pit; 2005-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Peabody Midwest Mining, LLC; 2005-04-01 to current/open; source msha-controller-operator-history