# Relationship history for MSHA mine 0405537

Current hierarchy: **Jim M  Freeze → Shasta Valley Asphalt & Aggregate → Shasta Valley Asphalt & Aggregates**

- 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:** Shasta Valley Asphalt & Aggregate → Shasta Valley Asphalt & Aggregates; 2002-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim M  Freeze → Shasta Valley Asphalt & Aggregates; 2002-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim M  Freeze → Shasta Valley Asphalt & Aggregate; 2002-08-15 to current/open; source msha-controller-operator-history