# Relationship history for MSHA mine 0102422

Current hierarchy: **Brothers Russell Jr → Old Hickory Coal Company Inc → Lynn Pit**

- 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:** Old Hickory Coal Company Inc → Lynn Pit; 1982-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brothers Russell Jr → Lynn Pit; 1982-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brothers Russell Jr → Old Hickory Coal Company Inc; 1982-01-01 to current/open; source msha-controller-operator-history