# Relationship history for MSHA mine 1512183

Current hierarchy: **Randall  Pridemore; Dan P  James → Case Carbon Mining Company Inc → No 1 Prep Plant**

- 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:** Case Carbon Mining Company Inc → No 1 Prep Plant; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan P  James et al → No 1 Prep Plant; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan P  James et al → Case Carbon Mining Company Inc; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randall  Pridemore et al → Case Carbon Mining Company Inc; 1980-01-01 to current/open; source msha-controller-operator-history