# Relationship history for MSHA mine 3503769

Current hierarchy: **Christopher H  Rose → High Desert Gems and Minerals → Spectrum 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** High Desert Gems and Minerals → Spectrum Mine; 2011-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christopher H  Rose → Spectrum Mine; 2011-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher H  Rose → High Desert Gems and Minerals; 2011-08-31 to current/open; source msha-controller-operator-history