# Relationship history for MSHA mine 0505039

Current hierarchy: **Sandra K  Van Cleave; George M  Ausmus → VCA Aggregates LLC → Van Cleave Pit**

- 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:** VCA Aggregates LLC → Van Cleave Pit; 2015-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sandra K  Van Cleave et al → Van Cleave Pit; 2015-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandra K  Van Cleave et al → VCA Aggregates LLC; 2015-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George M  Ausmus et al → VCA Aggregates LLC; 2015-06-24 to current/open; source msha-controller-operator-history