# Relationship history for MSHA mine 3200991

Current hierarchy: **Bernard  Vculeck; Marlene  Vculeck → Quality Aggregate LLC → McGregor**

- 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:** Quality Aggregate LLC → McGregor; 2012-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marlene  Vculeck et al → McGregor; 2012-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marlene  Vculeck et al → Quality Aggregate LLC; 2012-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bernard  Vculeck et al → Quality Aggregate LLC; 2012-09-18 to current/open; source msha-controller-operator-history