# Relationship history for MSHA mine 2402507

Current hierarchy: **John  Niebur → Niebur Excavating LLC → Moore Peavey**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Niebur Excavating LLC → Moore Peavey; 2008-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Niebur → Moore Peavey; 2008-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Niebur → Niebur Excavating LLC; 2008-04-15 to current/open; source msha-controller-operator-history