# Relationship history for MSHA mine 2104059

Current hierarchy: **Larry E  Liljenquist → Liljenquist Sewer and Excavating Inc → Liljenquist Sewer**

- 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:** Liljenquist Sewer and Excavating Inc → Liljenquist Sewer; 2023-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry E  Liljenquist → Liljenquist Sewer; 2023-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Liljenquist → Liljenquist Sewer and Excavating Inc; 2023-10-03 to current/open; source msha-controller-operator-history