# Relationship history for MSHA mine 3609263

Current hierarchy: **Devin  Hollenbeck → DH Manufacturing LLC → Stankiewicz #3**

- 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

- **controller_controls_mine:** Robert A  Stankiewicz → Stankiewicz #3; 2001-06-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Robert A Stankiewicz → Stankiewicz #3; 2004-06-17 to 2021-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Stankiewicz → Robert A Stankiewicz; 2004-06-17 to 2021-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Devin  Hollenbeck → Stankiewicz #3; 2020-11-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** DH Manufacturing LLC → Stankiewicz #3; 2021-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Devin  Hollenbeck → DH Manufacturing LLC; 2021-05-31 to current/open; source msha-controller-operator-history