# Relationship history for MSHA mine 2602110

Current hierarchy: **Degerstrom N A Inc - Gexa Gold Corp → U S Nevada Gold Search → Mother Lode 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:** U S Nevada Gold Search → Mother Lode Mine; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Degerstrom N A Inc - Gexa Gold Corp Et Al → Mother Lode Mine; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Degerstrom N A Inc - Gexa Gold Corp Et Al → U S Nevada Gold Search; 1989-08-01 to current/open; source msha-controller-operator-history