# Relationship history for MSHA mine 0103354

Current hierarchy: **Donald B  Ellestad → Viking Industries, LLC → Viking 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:** Viking Industries, LLC → Viking Pit; 2006-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald B  Ellestad → Viking Pit; 2006-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald B  Ellestad → Viking Industries, LLC; 2006-08-10 to current/open; source msha-controller-operator-history