# Relationship history for MSHA mine 2600561

Current hierarchy: **CHESS Depositary Nominees Pty Ltd (CDN) → Sierra Nevada Gold → New Pass 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:** Newpass Resources Ltd → New Pass Mine; 1950-01-01 to 1993-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Shatto Walter R → New Pass Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shatto Walter R → Newpass Resources Ltd; 1950-01-01 to 1993-09-30; source msha-controller-operator-history
- **operator_operates_mine:** New Pass Mine → New Pass Mine; 1993-10-01 to 2025-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Jung Donald E → New Pass Mine; 1993-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jung Donald E → New Pass Mine; 1993-10-01 to 2025-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Raymond Alex Hofstetter → New Pass Mine; 2017-07-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ruby Vista Resources Ltd. → New Pass Mine; 2025-09-29 to 2026-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Raymond Alex Hofstetter → Ruby Vista Resources Ltd.; 2025-09-29 to 2026-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Sierra Nevada Gold → New Pass Mine; 2026-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CHESS Depositary Nominees Pty Ltd (CDN) → New Pass Mine; 2026-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CHESS Depositary Nominees Pty Ltd (CDN) → Sierra Nevada Gold; 2026-07-15 to current/open; source msha-controller-operator-history