# Relationship history for MSHA mine 4607258

Current hierarchy: **Ellis Robert → White Water Mining Inc → Auger #1**

- 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:** Wilber Edwin J Sr → Auger #1; 1985-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** White Water Mining Inc → Auger #1; 1987-02-01 to 1987-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Wilber Edwin J Sr → White Water Mining Inc; 1987-02-01 to 1987-07-14; source msha-controller-operator-history
- **operator_operates_mine:** White Water Mining Inc → Auger #1; 1987-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ellis Robert → Auger #1; 1987-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ellis Robert → White Water Mining Inc; 1987-07-15 to current/open; source msha-controller-operator-history