# Relationship history for MSHA mine 4604842

Current hierarchy: **Fugate Guy & Wayne → Elk Knob Mining Company → No 5 Surface**

- 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

- **controller_controls_mine:** Fugate Guy & Wayne → No 5 Surface; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elk Knob Mining Company → No 5 Surface; 1975-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fugate Guy & Wayne → Elk Knob Mining Company; 1975-10-17 to current/open; source msha-controller-operator-history