# Relationship history for MSHA mine 4703885

Current hierarchy: **Nick L  Egbert; Daniel  Egbert → Egbert Excavating, Inc. → Wick Pit**

- 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:** Egbert Excavating, Inc. → Wick Pit; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Egbert et al → Wick Pit; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Egbert et al → Egbert Excavating, Inc.; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick L  Egbert et al → Egbert Excavating, Inc.; 2020-09-29 to current/open; source msha-controller-operator-history