# Relationship history for MSHA mine 4701519

Current hierarchy: **Elaine  Kraut → Genesee Aggregate Corp. → Hillview Sand & Gravel**

- 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:** Elaine  Kraut → Hillview Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central Ready Mixed Concrete Inc → Hillview Sand & Gravel; 1950-01-01 to 1990-08-13; source msha-controller-operator-history
- **controller_controls_mine:** Theo C  Froemming  et al → Hillview Sand & Gravel; 1950-01-01 to 1990-08-13; source msha-controller-operator-history
- **controller_controls_operator:** Theo C  Froemming  et al → Central Ready Mixed Concrete Inc; 1950-01-01 to 1990-08-13; source msha-controller-operator-history
- **operator_operates_mine:** Genesee Aggregate Corp. → Hillview Sand & Gravel; 1990-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elaine  Kraut → Genesee Aggregate Corp.; 1990-08-14 to current/open; source msha-controller-operator-history