# Relationship history for MSHA mine 1300053

Current hierarchy: **Greg  Bruening → Bruening Rock Products Inc → S & S QUARRIES**

- 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:** Greg  Bruening → S & S QUARRIES; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C D Hess & Son Rock Material Company → S & S QUARRIES; 1950-01-01 to 1986-06-09; source msha-controller-operator-history
- **controller_controls_mine:** C D  Hess → S & S QUARRIES; 1950-01-01 to 1986-06-09; source msha-controller-operator-history
- **controller_controls_operator:** C D  Hess → C D Hess & Son Rock Material Company; 1950-01-01 to 1986-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Hess & Van Zante Inc → S & S QUARRIES; 1986-06-10 to 1988-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Robert J  Van Zante → S & S QUARRIES; 1986-06-10 to 1988-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Robert J  Van Zante → Hess & Van Zante Inc; 1986-06-10 to 1988-09-06; source msha-controller-operator-history
- **operator_operates_mine:** S & S Quarries Inc → S & S QUARRIES; 1988-09-07 to 1995-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Swan et al → S & S QUARRIES; 1988-09-07 to 1995-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Swan et al → S & S Quarries Inc; 1988-09-07 to 1995-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Bruening Rock Products Inc → S & S QUARRIES; 1995-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Bruening → Bruening Rock Products Inc; 1995-02-15 to current/open; source msha-controller-operator-history