# Relationship history for MSHA mine 1901204

Current hierarchy: **Ronald R  Krutiak → Clarksurg Construction Co. Inc. → Clarksburg Construction Co 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:** Clarksurg Construction Co. Inc. → Clarksburg Construction Co Inc; 2010-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald R  Krutiak → Clarksburg Construction Co Inc; 2010-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald R  Krutiak → Clarksurg Construction Co. Inc.; 2010-12-02 to current/open; source msha-controller-operator-history