# Relationship history for MSHA mine 0100535

Current hierarchy: **George  Lewis; Dustin  Everett → CORE AGGREGATES, LLC → CORE AGGREGATES, LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Mark Donnell Sand Company → CORE AGGREGATES, LLC; 1950-01-01 to 2025-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Doris Donnell  Mezick → CORE AGGREGATES, LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doris Donnell  Mezick → Mark Donnell Sand Company; 1950-01-01 to 2025-03-25; source msha-controller-operator-history
- **operator_operates_mine:** Core Aggregates, LLC → CORE AGGREGATES, LLC; 2025-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Lewis et al → CORE AGGREGATES, LLC; 2025-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Lewis et al → Core Aggregates, LLC; 2025-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin  Everett et al → Core Aggregates, LLC; 2025-03-26 to current/open; source msha-controller-operator-history