# Relationship history for MSHA mine 3003415

Current hierarchy: **Julia A  Matt → MATT'S GRAVEL → MATT'S 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

- **operator_operates_mine:** MATT'S GRAVEL → MATT'S GRAVEL; 2002-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leo  Matt → MATT'S GRAVEL; 2002-06-26 to 2016-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Leo  Matt → MATT'S GRAVEL; 2002-06-26 to 2016-11-13; source msha-controller-operator-history
- **controller_controls_mine:** Julia A  Matt → MATT'S GRAVEL; 2016-11-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Julia A  Matt → MATT'S GRAVEL; 2016-11-14 to current/open; source msha-controller-operator-history