# Relationship history for MSHA mine 3004109

Current hierarchy: **David L Lobdell → MISTY VALLEY FARM, LLC → STEPHENTOWN GRAVEL  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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Misty Valley Farm, LLC → STEPHENTOWN GRAVEL  MINE; 2022-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David L Lobdell → STEPHENTOWN GRAVEL  MINE; 2022-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L Lobdell → Misty Valley Farm, LLC; 2022-12-22 to current/open; source msha-controller-operator-history