# Relationship history for MSHA mine 1519000

Current hierarchy: **Carl  Kirk → North Star Mining Inc → #4B**

- 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:** Carl  Kirk et al → #4B; 1998-02-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** North Star Mining Inc → #4B; 2006-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Kirk et al → North Star Mining Inc; 2006-06-05 to current/open; source msha-controller-operator-history