# Relationship history for MSHA mine 4104101

Current hierarchy: **Pat  Tittle → Genesis Sand & Gravel → GRAVEL SLOUGH 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

- **controller_controls_mine:** Pat  Tittle → GRAVEL SLOUGH PIT; 1986-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Genesis Sand & Gravel → GRAVEL SLOUGH PIT; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pat  Tittle → Genesis Sand & Gravel; 1999-08-01 to current/open; source msha-controller-operator-history