# Relationship history for MSHA mine 3102347

Current hierarchy: **David Christopher Boggs; Carl Andrew Boggs et  al → Alamance Aggregates LLC → Snow Camp 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:** Alamance Aggregates LLC → Snow Camp Quarry; 2021-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David Christopher Boggs et al → Snow Camp Quarry; 2021-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David Christopher Boggs et al → Alamance Aggregates LLC; 2021-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl Andrew Boggs et  al → Alamance Aggregates LLC; 2021-07-20 to current/open; source msha-controller-operator-history