# Relationship history for MSHA mine 4404619

Current hierarchy: **Bailey Toby & Teddy → Indian Fuel Corp → No 1 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:** Bailey Toby & Teddy Et Al → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Indian Fuel Corp → No 1 Mine; 1977-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Toby & Teddy Et Al → Indian Fuel Corp; 1977-01-01 to current/open; source msha-controller-operator-history