# Relationship history for MSHA mine 2602895

Current hierarchy: **Samuel  Sternheim; Seth  Stern → Quartz Lake Mining Inc. → Red Rock Mill**

- 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

- **controller_controls_mine:** Samuel  Sternheim et al → Red Rock Mill; 2022-01-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quartz Lake Mining Inc. → Red Rock Mill; 2023-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Samuel  Sternheim et al → Quartz Lake Mining Inc.; 2023-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seth  Stern et al → Quartz Lake Mining Inc.; 2023-07-31 to current/open; source msha-controller-operator-history