# Relationship history for MSHA mine 2602815

Current hierarchy: **Greg  Smith → Taghman Acquisitions LLC → Gold Ribbon 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:** Ruby Vista Resources Ltd. → Gold Ribbon Mine; 2017-07-05 to 2022-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Raymond Alex Hofstetter → Gold Ribbon Mine; 2017-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond Alex Hofstetter → Ruby Vista Resources Ltd.; 2017-07-05 to 2022-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Taghman Acquisitions LLC → Gold Ribbon Mine; 2022-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Smith → Gold Ribbon Mine; 2022-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Smith → Taghman Acquisitions LLC; 2022-06-02 to current/open; source msha-controller-operator-history