# Relationship history for MSHA mine 1514609

Current hierarchy: **Fugate Ronald D → W & F Mining Corp → #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** High Ridge Coal Company → #1 Mine; 1984-05-01 to 1985-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Walters Luke → #1 Mine; 1984-05-01 to 1985-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Walters Luke → High Ridge Coal Company; 1984-05-01 to 1985-12-30; source msha-controller-operator-history
- **operator_operates_mine:** W & F Mining Corp → #1 Mine; 1985-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fugate Ronald D Et Al → #1 Mine; 1985-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fugate Ronald D Et Al → W & F Mining Corp; 1985-12-31 to current/open; source msha-controller-operator-history