# Relationship history for MSHA mine 1519547

Current hierarchy: **Peabody Energy Corporation → Thoroughbred Mining, LLC → Spring Ridge Preparation Complex**

- 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:** Thoroughbred Mining, LLC → Spring Ridge Preparation Complex; 2011-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Spring Ridge Preparation Complex; 2011-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Thoroughbred Mining, LLC; 2011-10-21 to current/open; source msha-controller-operator-history