# Relationship history for MSHA mine 3304107

Current hierarchy: **Rawson Sonny → Cardinal Mining Inc → Brush Creek 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

- **controller_controls_mine:** Rawson Sonny → Brush Creek Mine; 1984-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Mining Inc → Brush Creek Mine; 1987-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rawson Sonny → Cardinal Mining Inc; 1987-08-01 to current/open; source msha-controller-operator-history