# Relationship history for MSHA mine 1100173

Current hierarchy: **Jerald  Tarble → Quality Lime Company → QUALITY LIME COMPANY**

- 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:** Quality Lime Company → QUALITY LIME COMPANY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerald  Tarble → QUALITY LIME COMPANY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerald  Tarble → Quality Lime Company; 1950-01-01 to current/open; source msha-controller-operator-history