# Relationship history for MSHA mine 0401285

Current hierarchy: **Brush Creek Mining & Development Company Inc → Brush Creek Mining & Development Company Inc → Kate Hardy**

- 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

- **operator_operates_mine:** R Flatland Company → Kate Hardy; 1950-01-01 to 1997-08-31; source msha-controller-operator-history
- **controller_controls_mine:** R Flatland Company → Kate Hardy; 1950-01-01 to 1997-08-31; source msha-controller-operator-history
- **controller_controls_operator:** R Flatland Company → R Flatland Company; 1950-01-01 to 1997-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Brush Creek Mining & Development Company Inc → Kate Hardy; 1981-11-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brush Creek Mining & Development Company Inc → Kate Hardy; 1997-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brush Creek Mining & Development Company Inc → Brush Creek Mining & Development Company Inc; 1997-09-01 to current/open; source msha-controller-operator-history