# Relationship history for MSHA mine 3609358

Current hierarchy: **Ronald R  Carter Jr → R & R Stone → Carter 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:** Todd A Carter, Sole Proprietor → Carter Quarry; 2005-08-02 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Todd A  Carter → Carter Quarry; 2005-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd A  Carter → Todd A Carter, Sole Proprietor; 2005-08-02 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** R & R Stone → Carter Quarry; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald R  Carter Jr → Carter Quarry; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald R  Carter Jr → R & R Stone; 2011-06-01 to current/open; source msha-controller-operator-history