# Relationship history for MSHA mine 3502386

Current hierarchy: **Bowes William A → William A Bowes Inc → Cougar 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

- **operator_operates_mine:** William A Bowes Inc → Cougar Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bowes William A → Cougar Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowes William A → William A Bowes Inc; 1950-01-01 to current/open; source msha-controller-operator-history