# Relationship history for MSHA mine 4202313

Current hierarchy: **Emily  Madsen; Mike  Madsen → Madsen Excavation → Madsen Excavation, LLC**

- 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:** David Madsen Construction → Madsen Excavation, LLC; 2000-12-01 to 2016-11-14; source msha-controller-operator-history
- **controller_controls_mine:** David  Madsen → Madsen Excavation, LLC; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Madsen → David Madsen Construction; 2000-12-01 to 2016-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Madsen Excavation → Madsen Excavation, LLC; 2016-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Emily  Madsen et al → Madsen Excavation, LLC; 2016-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emily  Madsen et al → Madsen Excavation; 2016-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Madsen et al → Madsen Excavation; 2016-11-15 to current/open; source msha-controller-operator-history