# Relationship history for MSHA mine 3200727

Current hierarchy: **Glenn  Baranko → Center Coal Co-Div/General Industries Inc → Center Coal Company**

- 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:** Schulte Coal Inc → Center Coal Company; 1991-12-01 to 2000-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Schulte → Center Coal Company; 1991-12-01 to 2000-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Schulte → Schulte Coal Inc; 1991-12-01 to 2000-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Center Coal Co-Div/General Industries Inc → Center Coal Company; 2000-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Glenn  Baranko → Center Coal Company; 2000-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Glenn  Baranko → Center Coal Co-Div/General Industries Inc; 2000-10-02 to current/open; source msha-controller-operator-history