# Relationship history for MSHA mine 4201689

Current hierarchy: **Laramide Resources Ltd → Laramide La Sal, Inc. → La Sal Number 2**

- 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

- **controller_controls_mine:** Homestake Mining Company → La Sal Number 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Homestake Mining Company → La Sal Number 2; 1980-07-01 to 2012-11-25; source msha-controller-operator-history
- **controller_controls_operator:** Homestake Mining Company → Homestake Mining Company; 1980-07-01 to 2012-11-25; source msha-controller-operator-history
- **operator_operates_mine:** Laramide La Sal, Inc. → La Sal Number 2; 2012-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Laramide Resources Ltd → La Sal Number 2; 2012-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Laramide Resources Ltd → Laramide La Sal, Inc.; 2012-11-26 to current/open; source msha-controller-operator-history