# Relationship history for MSHA mine 0103078

Current hierarchy: **Frank D Reed Jr → Madison Materials Inc → BONGOR PLANT**

- 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:** Frank D Reed Jr → BONGOR PLANT; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Madison Materials Inc → BONGOR PLANT; 1996-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank D Reed Jr → Madison Materials Inc; 1996-06-01 to current/open; source msha-controller-operator-history