# Relationship history for MSHA mine 0203102

Current hierarchy: **Eberhardt (Ed)  Mueller → RedHawk Exploration & Mining Inc → RedHawk Tombstone Project**

- 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:** RedHawk Exploration & Mining Inc → RedHawk Tombstone Project; 2005-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eberhardt (Ed)  Mueller → RedHawk Tombstone Project; 2005-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eberhardt (Ed)  Mueller → RedHawk Exploration & Mining Inc; 2005-09-28 to current/open; source msha-controller-operator-history