# Relationship history for MSHA mine 3004179

Current hierarchy: **Ken L  Van Slyke → Van Slyke Family Farm, LLC → Farm 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:** Van Slyke Family Farm, LLC → Farm Pit; 2026-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ken L  Van Slyke → Farm Pit; 2026-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ken L  Van Slyke → Van Slyke Family Farm, LLC; 2026-03-18 to current/open; source msha-controller-operator-history