# Relationship history for MSHA mine 3603300

Current hierarchy: **Croner James E → Croner Inc → Kimmelton Pit & Miller Pit**

- 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:** Croner Inc → Kimmelton Pit & Miller Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Croner James E → Kimmelton Pit & Miller Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Croner James E → Croner Inc; 1950-01-01 to current/open; source msha-controller-operator-history