# Relationship history for MSHA mine 3101093

Current hierarchy: **John W  Justice IV → Southern Aggregates → Southern Aggregates**

- 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:** Southern Stone Industries Inc → Southern Aggregates; 1950-01-01 to 1979-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Hughes → Southern Aggregates; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Hughes → Southern Stone Industries Inc; 1950-01-01 to 1979-10-10; source msha-controller-operator-history
- **operator_operates_mine:** Staley Rock Crushing Company Inc → Southern Aggregates; 1979-10-11 to 1980-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Bobby  Simmons → Southern Aggregates; 1979-10-11 to 1980-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Bobby  Simmons → Staley Rock Crushing Company Inc; 1979-10-11 to 1980-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Southern Aggregates Inc → Southern Aggregates; 1980-06-16 to 1984-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Hughes → Southern Aggregates; 1980-06-16 to 1984-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Hughes → Southern Aggregates Inc; 1980-06-16 to 1984-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Southern Aggregates → Southern Aggregates; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John W  Justice → Southern Aggregates; 1984-07-01 to 2024-10-28; source msha-controller-operator-history
- **controller_controls_operator:** John W  Justice → Southern Aggregates; 1984-07-01 to 2024-10-28; source msha-controller-operator-history
- **controller_controls_mine:** John W  Justice IV → Southern Aggregates; 2024-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  Justice IV → Southern Aggregates; 2024-10-29 to current/open; source msha-controller-operator-history