# Relationship history for MSHA mine 3003119

Current hierarchy: **Paul H  Lyndaker → Lyndaker Excavating & Trucking Llc → PORTABLE #10839**

- 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

- **controller_controls_mine:** Paul H  Lyndaker → PORTABLE #10839; 1987-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lyndaker Excavating & Trucking Llc → PORTABLE #10839; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul H  Lyndaker → Lyndaker Excavating & Trucking Llc; 1994-05-01 to current/open; source msha-controller-operator-history