# Relationship history for MSHA mine 3102232

Current hierarchy: **Leonard  Fletcher; Ray  Spangler → Lawndale Sand LLC → Lawndale Sand LLC Mine**

- 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:** Lawndale Sand LLC → Lawndale Sand LLC Mine; 2008-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray  Spangler et al → Lawndale Sand LLC Mine; 2008-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Spangler et al → Lawndale Sand LLC; 2008-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Fletcher et al → Lawndale Sand LLC; 2008-04-21 to current/open; source msha-controller-operator-history