# Relationship history for MSHA mine 4801355

Current hierarchy: **Peabody Energy Corporation → Peabody School Creek Mining LLC → School Creek**

- 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:** Shell Mining Company → School Creek; 1981-07-01 to 1992-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Shell Oil Company → School Creek; 1981-07-01 to 1992-11-23; source msha-controller-operator-history
- **controller_controls_operator:** Shell Oil Company → Shell Mining Company; 1981-07-01 to 1992-11-23; source msha-controller-operator-history
- **operator_operates_mine:** Triton Coal Company → School Creek; 1992-11-24 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Zeigler Coal Holding Company → School Creek; 1992-11-24 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Zeigler Coal Holding Company → Triton Coal Company; 1992-11-24 to 1998-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Triton Coal Company → School Creek; 1998-09-02 to 1998-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → School Creek; 1998-09-02 to 1998-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Triton Coal Company; 1998-09-02 to 1998-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Triton Coal Company LlC → School Creek; 1998-12-14 to 2008-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Partners → School Creek; 1998-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Partners → Triton Coal Company LlC; 1998-12-14 to 2008-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Peabody School Creek Mining LLC → School Creek; 2008-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → School Creek; 2008-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Peabody School Creek Mining LLC; 2008-05-05 to current/open; source msha-controller-operator-history