# Relationship history for MSHA mine 3003648

Current hierarchy: **David S  Gmeiner → David S. Gmeiner → Cape Vincent Crushed Stone Products**

- 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:** David S. Gmeiner → Cape Vincent Crushed Stone Products; 2008-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David S  Gmeiner → Cape Vincent Crushed Stone Products; 2008-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David S  Gmeiner → David S. Gmeiner; 2008-07-31 to current/open; source msha-controller-operator-history