# Relationship history for MSHA mine 0202925

Current hierarchy: **Cletus  Frei → Frei Trucking & Construction → COCHISE**

- 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:** Frei Trucking & Construction → COCHISE; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cletus  Frei → COCHISE; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cletus  Frei → Frei Trucking & Construction; 2001-03-01 to current/open; source msha-controller-operator-history