# Relationship history for MSHA mine 1700810

Current hierarchy: **Conrad J  Smith → Sullivan Granite Co., LLC → Brown's Meadow 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:** Sullivan Granite Co., LLC → Brown's Meadow Quarry; 2006-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Conrad J  Smith → Brown's Meadow Quarry; 2006-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Conrad J  Smith → Sullivan Granite Co., LLC; 2006-12-04 to current/open; source msha-controller-operator-history