# Relationship history for MSHA mine 4703413

Current hierarchy: **Tony F  Smith → Tony's Wabeno Redi-Mix → Tony's Wabeno Redi-Mix**

- 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:** Tony's Wabeno Redi-Mix → Tony's Wabeno Redi-Mix; 2005-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony F  Smith et al → Tony's Wabeno Redi-Mix; 2005-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony F  Smith et al → Tony's Wabeno Redi-Mix; 2005-04-07 to current/open; source msha-controller-operator-history