# Relationship history for MSHA mine 1800759

Current hierarchy: **Carroll O (Jack)  Beitzel; Jone E  Beitzel → Garrett County Peat Products LLC → Knox Dimension Stone 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:** Garrett County Peat Products LLC → Knox Dimension Stone Quarry; 2003-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jone E  Beitzel  et al → Knox Dimension Stone Quarry; 2003-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jone E  Beitzel  et al → Garrett County Peat Products LLC; 2003-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carroll O (Jack)  Beitzel  et al → Garrett County Peat Products LLC; 2003-04-03 to current/open; source msha-controller-operator-history