# Relationship history for MSHA mine 3610314

Current hierarchy: **David S  Herrholtz → WINDBER STONE, LLC → OGLETOWN QUARRY**

- 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:** Windber Stone, LLC → OGLETOWN QUARRY; 2020-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David S  Herrholtz → OGLETOWN QUARRY; 2020-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David S  Herrholtz → Windber Stone, LLC; 2020-01-24 to current/open; source msha-controller-operator-history