# Relationship history for MSHA mine 3901670

Current hierarchy: **Ronald Deane Hodne → Ronnies Rocks and Boulders → Ronnies Plant**

- 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:** Ronnies Rocks and Boulders → Ronnies Plant; 2022-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald Deane Hodne → Ronnies Plant; 2022-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald Deane Hodne → Ronnies Rocks and Boulders; 2022-09-05 to current/open; source msha-controller-operator-history