# Relationship history for MSHA mine 2103921

Current hierarchy: **Rodney Dean  Paskewitz → Duro Rock Supply → Screen Machine**

- 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:** Duro Rock Supply → Screen Machine; 2018-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rodney Dean  Paskewitz → Screen Machine; 2018-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney Dean  Paskewitz → Duro Rock Supply; 2018-03-05 to current/open; source msha-controller-operator-history