# Relationship history for MSHA mine 3609619

Current hierarchy: **James  Maletto; Jeff  Maletto → M&M Contractors → Red Hill Stone 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

- **operator_operates_mine:** M&M Contractors → Red Hill Stone Quarry; 2008-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Maletto et al → Red Hill Stone Quarry; 2008-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Maletto et al → M&M Contractors; 2008-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Maletto et al → M&M Contractors; 2008-04-24 to current/open; source msha-controller-operator-history