# Relationship history for MSHA mine 4604988

Current hierarchy: **Neal Eugene R → Neal Coal Company Inc → 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:** Saunders Coal Corp → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E & J Coal Corp → No 1 Mine; 1975-10-10 to 1979-02-26; source msha-controller-operator-history
- **controller_controls_operator:** Saunders Coal Corp → E & J Coal Corp; 1975-10-10 to 1979-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Neal Coal Company Inc → No 1 Mine; 1979-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Neal Eugene R → No 1 Mine; 1979-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neal Eugene R → Neal Coal Company Inc; 1979-02-27 to current/open; source msha-controller-operator-history