# Relationship history for MSHA mine 4701419

Current hierarchy: **Patrick  Wimme → Wimme Sand & Gravel, Inc. → Wimme Pit**

- 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:** Wimme Sand & Gravel Inc → Wimme Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  Wimme et al → Wimme Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Wimme et al → Wimme Sand & Gravel Inc; 1950-01-01 to current/open; source msha-controller-operator-history