# Relationship history for MSHA mine 1201852

Current hierarchy: **Miller Richard C → Coal Cat Auger & Mining Inc → Coal Cat Auger And Mining 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Coal Cat Auger & Mining Inc → Coal Cat Auger And Mining Inc; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Miller Richard C → Coal Cat Auger And Mining Inc; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller Richard C → Coal Cat Auger & Mining Inc; 1981-07-01 to current/open; source msha-controller-operator-history