# Relationship history for MSHA mine 2002356

Current hierarchy: **Robert J  Aldridge → South Flint Gravel Inc → South Flint Gravel Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** South Flint Gravel Inc → South Flint Gravel Inc; 1950-01-01 to 1986-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Foster A  Gillespie → South Flint Gravel Inc; 1950-01-01 to 1986-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Foster A  Gillespie → South Flint Gravel Inc; 1950-01-01 to 1986-05-21; source msha-controller-operator-history
- **operator_operates_mine:** South Flint Gravel Inc → South Flint Gravel Inc; 1986-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert J  Aldridge → South Flint Gravel Inc; 1986-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert J  Aldridge → South Flint Gravel Inc; 1986-05-22 to current/open; source msha-controller-operator-history