# Relationship history for MSHA mine 1002250

Current hierarchy: **Rebecca E Liddil → Liddil Paving LLC → Portable Crushing Plant**

- 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:** Liddil Paving LLC → Portable Crushing Plant; 2014-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rebecca E Liddil → Portable Crushing Plant; 2014-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rebecca E Liddil → Liddil Paving LLC; 2014-07-11 to current/open; source msha-controller-operator-history