# Relationship history for MSHA mine 1002164

Current hierarchy: **Cameron G  Smith → Cold Creek Stone Company → Cold Creek Stone/Junction Quarry**

- 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:** Cold Creek Stone Company → Cold Creek Stone/Junction Quarry; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cameron G  Smith → Cold Creek Stone/Junction Quarry; 2008-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cameron G  Smith → Cold Creek Stone Company; 2008-07-01 to current/open; source msha-controller-operator-history