# Relationship history for MSHA mine 0302046

Current hierarchy: **Oscar  Cozzini → Hall Sharpening Stones → Fancy Hill Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Oscar  Cozzini → Fancy Hill Quarry; 2013-05-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hall Sharpening Stones → Fancy Hill Quarry; 2014-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Oscar  Cozzini → Hall Sharpening Stones; 2014-06-25 to current/open; source msha-controller-operator-history