# Relationship history for MSHA mine 4605958

Current hierarchy: **Belco Petroleum Corp → Kitchekan Fuel Corp → Mine No 12-B-1 C/O H & F Mining Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Belco Petroleum Corp → Mine No 12-B-1 C/O H & F Mining Inc; 1976-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kitchekan Fuel Corp → Mine No 12-B-1 C/O H & F Mining Inc; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Belco Petroleum Corp → Kitchekan Fuel Corp; 1979-01-01 to current/open; source msha-controller-operator-history