# Relationship history for MSHA mine 3607111

Current hierarchy: **C Alan  Walker → Fuel Fabricator'S Inc → Fuel Fabricators Preparation Plant**

- 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:** Fuel Fabricator'S Inc → Fuel Fabricators Preparation Plant; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** C Alan  Walker → Fuel Fabricators Preparation Plant; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C Alan  Walker → Fuel Fabricator'S Inc; 1980-04-01 to current/open; source msha-controller-operator-history