# Relationship history for MSHA mine 4606798

Current hierarchy: **Young John P → Jagrti Coal Company Inc → Coal Bank No 8a**

- 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

- **controller_controls_mine:** Young John P → Coal Bank No 8a; 1982-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jagrti Coal Company Inc → Coal Bank No 8a; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Young John P → Jagrti Coal Company Inc; 1984-06-01 to current/open; source msha-controller-operator-history