# Relationship history for MSHA mine 1513057

Current hierarchy: **Noble C A Iii-Anna Mae Engle → Annaco Inc → No 1 Deep 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:** Annaco Inc → No 1 Deep Mine; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Noble C A Iii-Anna Mae Engle Et Al → No 1 Deep Mine; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noble C A Iii-Anna Mae Engle Et Al → Annaco Inc; 1981-08-01 to current/open; source msha-controller-operator-history