# Relationship history for MSHA mine 0402609

Current hierarchy: **Craig Thomas H → Idria Minerals Corp → New Idria Mines**

- 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:** Idria Minerals Corp → New Idria Mines; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craig Thomas H → New Idria Mines; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig Thomas H → Idria Minerals Corp; 1980-02-01 to current/open; source msha-controller-operator-history