# Relationship history for MSHA mine 1001927

Current hierarchy: **City Of Buhl-Id → Buhl Highway District → #24 Screener**

- 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:** Buhl Highway District → #24 Screener; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** City Of Buhl-Id → #24 Screener; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** City Of Buhl-Id → Buhl Highway District; 1997-04-01 to current/open; source msha-controller-operator-history