# Relationship history for MSHA mine 0405244

Current hierarchy: **Steven E  Baxman → Baxman Gravel Company Inc → Ten Mile Second Crossing**

- 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:** Steven E  Baxman → Ten Mile Second Crossing; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Baxman Gravel Company Inc → Ten Mile Second Crossing; 1993-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven E  Baxman → Baxman Gravel Company Inc; 1993-08-01 to current/open; source msha-controller-operator-history