# Relationship history for MSHA mine 3004022

Current hierarchy: **Stanley  Marabito; Robert  Garown → Zimmer Road Development Corp. → Zimmer Road Development**

- 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:** Zimmer Road Development Corp. → Zimmer Road Development; 2018-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Garown et al → Zimmer Road Development; 2018-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Garown et al → Zimmer Road Development Corp.; 2018-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley  Marabito et al → Zimmer Road Development Corp.; 2018-07-27 to current/open; source msha-controller-operator-history