# Relationship history for MSHA mine 2003636

Current hierarchy: **Dean  Leavitt; Eric  Kuznicki; Michael  Suty → Michigan ReAgg, Inc. → Portable Crushing Plant #1**

- 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:** Michigan ReAgg, Inc. → Portable Crushing Plant #1; 2022-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Suty et al → Portable Crushing Plant #1; 2022-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Suty et al → Michigan ReAgg, Inc.; 2022-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Leavitt et al → Michigan ReAgg, Inc.; 2022-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Kuznicki et al → Michigan ReAgg, Inc.; 2022-10-13 to current/open; source msha-controller-operator-history