# Relationship history for MSHA mine 4105882

Current hierarchy: **Mike  Van Eaton → Van Eaton Ready Mix → Brice Sand and Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Mike  Van Eaton → Brice Sand and Gravel; 2010-04-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Van Eaton Ready Mix → Brice Sand and Gravel; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Van Eaton → Van Eaton Ready Mix; 2026-06-15 to current/open; source msha-controller-operator-history