# Relationship history for MSHA mine 3303791

Current hierarchy: **Mitchell Claire E-Thomas A Crisp & James H Large → Coal Power Inc → Coal Power Mine #1**

- 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 Power Inc → Coal Power Mine #1; 1979-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mitchell Claire E-Thomas A Crisp & James H Large → Coal Power Mine #1; 1979-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell Claire E-Thomas A Crisp & James H Large → Coal Power Inc; 1979-11-01 to current/open; source msha-controller-operator-history