# Relationship history for MSHA mine 4202601

Current hierarchy: **Eric C  Flippo → Cornerstone Industries Inc. → Pan Green/Highland Mist Mine**

- 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:** Cornerstone Industries Inc. → Pan Green/Highland Mist Mine; 2013-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eric C  Flippo → Pan Green/Highland Mist Mine; 2013-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric C  Flippo → Cornerstone Industries Inc.; 2013-02-06 to current/open; source msha-controller-operator-history