# Relationship history for MSHA mine 4607092

Current hierarchy: **Mullins Loraine → Loraine Construction Company Inc → No 1 Auger**

- 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:** Loraine Construction Company Inc → No 1 Auger; 1986-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Loraine → No 1 Auger; 1986-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Loraine → Loraine Construction Company Inc; 1986-03-01 to current/open; source msha-controller-operator-history