# Relationship history for MSHA mine 2400461

Current hierarchy: **Bonnie  Prince; John  Prince → Prince Inc → Forsyth Sand & Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Prince Inc → Forsyth Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bonnie  Prince et al → Forsyth Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bonnie  Prince et al → Prince Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Prince et al → Prince Inc; 1950-01-01 to current/open; source msha-controller-operator-history