# Relationship history for MSHA mine 4402300

Current hierarchy: **Lawson D R → Wilder Coal Company → #2 Auger Mine**

- 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:** Wilder Coal Company → #2 Auger Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawson D R → #2 Auger Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawson D R → Wilder Coal Company; 1950-01-01 to current/open; source msha-controller-operator-history