# Relationship history for MSHA mine 2601884

Current hierarchy: **Homestake Mining Company → Corona Gold Inc → Santa Fe 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Corona Gold Inc → Santa Fe Mine; 1984-04-01 to 1993-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Corona Corp → Santa Fe Mine; 1984-04-01 to 1993-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Corona Corp → Corona Gold Inc; 1984-04-01 to 1993-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Corona Gold Inc → Santa Fe Mine; 1993-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Homestake Mining Company → Santa Fe Mine; 1993-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Homestake Mining Company → Corona Gold Inc; 1993-01-15 to current/open; source msha-controller-operator-history