# Relationship history for MSHA mine 3003858

Current hierarchy: **Patrick  Kerwin → NORTHERN CRUSHING LLC → EAGLE 1200**

- 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

- **controller_controls_mine:** Carver P  Laraway et al → EAGLE 1200; 1995-11-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carver Sand & Gravel. LLC → EAGLE 1200; 2012-09-19 to 2015-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Carver P  Laraway et al → Carver Sand & Gravel. LLC; 2012-09-19 to 2015-03-17; source msha-controller-operator-history
- **operator_operates_mine:** Northern Crushing LLC → EAGLE 1200; 2015-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  Kerwin → EAGLE 1200; 2015-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Kerwin → Northern Crushing LLC; 2015-03-18 to current/open; source msha-controller-operator-history