# Relationship history for MSHA mine 4606935

Current hierarchy: **Wilber Edwin J Sr → White Water Mining Inc → Whitewater #1 (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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** White Water Mining Inc → Whitewater #1 (Surface); 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wilber Edwin J Sr → Whitewater #1 (Surface); 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilber Edwin J Sr → White Water Mining Inc; 1985-05-01 to current/open; source msha-controller-operator-history