# Relationship history for MSHA mine 3901690

Current hierarchy: **Scott  Sand; Aaron  Van Der Stoep → Kings Crushing LLC → Wipf 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:** Kings Crushing LLC → Wipf Pit; 2025-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aaron  Van Der Stoep et al → Wipf Pit; 2025-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aaron  Van Der Stoep et al → Kings Crushing LLC; 2025-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Sand et al → Kings Crushing LLC; 2025-03-19 to current/open; source msha-controller-operator-history