# Relationship history for MSHA mine 2200780

Current hierarchy: **Michael Shane  Reid → Pearl River Aggregates LLC → Trestle 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:** Pearl River Aggregates LLC → Trestle Plant; 2007-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael Shane  Reid → Trestle Plant; 2007-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael Shane  Reid → Pearl River Aggregates LLC; 2007-09-26 to current/open; source msha-controller-operator-history