# Relationship history for MSHA mine 4603088

Current hierarchy: **Peter Creek Development Company → Wevaco Processing Company → Wevaco Preparation 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:** Carbon Fuel Company → Wevaco Preparation Plant; 1950-01-01 to 1982-06-11; source msha-controller-operator-history
- **controller_controls_mine:** ITT Corporation → Wevaco Preparation Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** ITT Corporation → Carbon Fuel Company; 1950-01-01 to 1982-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Usx Corp → Wevaco Preparation Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** United States Steel Mining Company Inc → Wevaco Preparation Plant; 1982-06-12 to 1990-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Usx Corp → United States Steel Mining Company Inc; 1982-06-12 to 1990-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Wevaco Processing Company → Wevaco Preparation Plant; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peter Creek Development Company → Wevaco Preparation Plant; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter Creek Development Company → Wevaco Processing Company; 1990-03-01 to current/open; source msha-controller-operator-history