# Relationship history for MSHA mine 0405580

Current hierarchy: **Tom M  Rubadeux → T.N.T. Equip Rental → Avalon 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** T.N.T. Equip Rental → Avalon Pit; 2004-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom M  Rubadeux → Avalon Pit; 2004-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom M  Rubadeux → T.N.T. Equip Rental; 2004-01-06 to current/open; source msha-controller-operator-history