# Relationship history for MSHA mine 4609360

Current hierarchy: **Patriot Coal Corporation → Pine Ridge Coal Company LLC → Lotts Fork 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Peabody Energy Corporation → Lotts Fork Mine; 1998-05-19 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Lotts Fork Mine; 2007-10-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pine Ridge Coal Company LLC → Lotts Fork Mine; 2010-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Pine Ridge Coal Company LLC; 2010-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Pine Ridge Coal Company LLC; 2010-04-03 to 2007-10-30; source msha-controller-operator-history