# Relationship history for MSHA mine 2401771

Current hierarchy: **Smith J Al & Don Johnson → Sundance Mining & Associates → Sundance Mining & Associates**

- 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:** Baty Mining Company Inc → Sundance Mining & Associates; 1984-07-01 to 1985-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Baty Bruce → Sundance Mining & Associates; 1984-07-01 to 1985-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Baty Bruce → Baty Mining Company Inc; 1984-07-01 to 1985-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Sundance Mining & Associates → Sundance Mining & Associates; 1985-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith J Al & Don Johnson → Sundance Mining & Associates; 1985-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith J Al & Don Johnson → Sundance Mining & Associates; 1985-07-26 to current/open; source msha-controller-operator-history